There is a growing body of evidence that points to religious speculations have a biological base. If it is found, it doesn't prove religious beliefs are false, nor does it prove there is no God and that concept is a delusion, either. Just because somebody doesn't believe in creationism doesn't mean they are obligated to believe in evolution. These are beliefs, not empirical evidence. Both are similar in general concept; one isn't 'superior' to the other, nor are those who believe in the first 'dumber' than those who believe in evolution. On the other hand, one contributes greatly to sociological and cultural strengths and progress over time, while the other doesn't contribute anything to those. As far as any evidence goes, it's not going to harm children if both intelligent design and evolution were taught in schools, any more than it ever did in the past, as long as they come to understand both are not proven but are just hypotheses.
For many of us, knowledge/assurance of God is based on empirical evidence and is something quite different from pure faith. Where the faith comes in is trusting God beyond what we have experienced. But you are quite right that much of the scholarly concepts that are speculated, promoted, suggested, demanded, and bloviated about God are pure hypothesis and to choose to accept them is also of necessity faith based.
Because of our limited mortal existence, Evolution is not something that is empirically experienced, so most of us accept on faith that the scientific information about it that is available to us is trustworthy. We trust it based on our own ability to reason and understand logic, but it is faith based nonetheless.
While I do not promote intelligent design being taught as science, I agree that it does not harm students in the least to be honestly informed that many, including esteemed scientists, do see an order in the universe that logically goes beyond mere chance or accident and therefore there is justification for some sort of intelligent design in the process. And even though science currently has no means or process to investigate that, and the students should know that too, to allow the mind to embrace and consider it all is truly liberating and expands all possibilities to be explored.
Do you know of any book I might read that doesn't have "concepts that are speculated, promoted, suggested, demanded, and bloviated about God.? Especially the demand part. That demand part throws me.
Try C.S. Lewis, specially the first part of his book "Mere Christianity". Of course any time we mere mortals attempt to explain or define what we mean by God, faith, eternal, good, evil, righteousness, unjust, etc. we are working from our own inadequate and flawed language, knowledge, experience, interpretation or whatever and Lewis is no exception to that. But Lewis describes his own reasoning that took him from Atheist to Christian and describes it in everyday English and concepts for those who don't want to deal with the intense and sometimes pedantic academic theological concepts and jargon. And he gives a person a lot to think about.
He hooked me because when I first opened the book--not at the beginning--I read (paraphrased from memory): God created us with free will and free will means our choices or perceptions can go right or wrong. It is free will that makes evil possible.
That so spoke to what I already believed that I was persuaded to read further.
On the omniscience of God, he wrote:
". . .It remains true that all things are possible with God: the intrinsic impossibilities are not things but nonentities. It is no more possible for God than for the weakest of His creatures to carry out both of two mutually exclusive alternatives; not because His power meets an obstacle, but because nonsense remains nonsense even when we talk it about God. . . .”
I myself won't say what is or is not possible for God but simply go with my own reasoning about what is and leave it to God to work out any difficulties with that.
And that brings us to the 'demand' part. Whenever you find people who say:
1. God is absolutely this or God is absolutely that. . . .
2. God would do this or would not do that. . . .
3. It is true because it is Biblical. . .
4. It is not true because there is no scientific evidence for it. . . .
5. You must believe this or you are going to hell. . . .
6. You must accept or think like this or you are ignorant, uneducated, or wrong. . .
you have people who are demanding that God be whatever they say God must be and who are assuming superiority over those who see it differently. And that, in my opinion, puts restraints on God that we simply are not smart enough to do. That is what I mean by demand.