I understood quite well, actually. Apparently you're not taking into effect that the states have their own constitutions that they have to follow, just as the federal government must follow the Constitution. The U.S. Constitution does not stop the states from restricting freedom of expression or stop them from establishing a state religion, but their own constitutions may.
That was exactly my point. I'm quite aware that individual states have their own constitutions; I was asking you if the U.S. Constitution prohibited them from establishing state religions or restricting freedom of expression. Now that you have denied this (where you incorporate the Fourteenth Amendment, I do not know, unless you claim that it was passed in violation of Article Five), my next contention involves the degree and nature of "tyranny" allegedly imposed through federal intervention on the state level. Is not a federal intervention to prevent state restrictions of free speech actually a less tyrannical or authoritarian imposition than that state's unrestricted crackdown on free speech would have been? You need to distinguish between the relative effects of ends and means; you may consider the means of federal intervention "tyrannical"; but in such a situation, it would ultimately prevent a more tyrannical end.
I can claim that those programs are violations of the intent to promote the general welfare, because if they were intended to promote the general welfare then they would have been included explicitly in the Constitution. If we feel we need these programs then we must pass an amendment to the Constitution to make them constitutional.
I have already addressed this.
The original Constitution must be considered in its appropriate historical and situational context. Since the writers of the Constitution incorporated certain specific facets and elements that were clearly intended to apply to their specific historical situation (the Third Amendment is the most obvious example), it's necessary to consider their original intent as it would apply to our current situational context. Most importantly, we might consider the fact that they had a general interest in promoting equality (or at least equity), but did not incorporate specific clauses to this effect into the Constitution because they could not have conceived of the rapid intensifications of inequality that an industrialized society and economy would later bring about. We can therefore interpret and adapt their intent as behooving the establishment of specific federal programs that have the effect of promoting greater equality or equity. There's nothing especially complex about this, really. It's a very basic adaptationist approach.
Moreover, we could refer to the fact that there is a compelling government interest in the maintenance of economic stability, and since welfare programs ensure the physical efficiency of the workforce and therefore uphold capitalism, the government therefore has an interest in promoting the expansion of welfare programs.