I think everyone should be able to be sued.
Bigots must pay the piper also.
So we should be able to sue everyone who tries to prevent our free practice of religion? I can't wait. Religion organization have hundreds of millions of people to sue the tiny 2% that are LGBT. And hundreds of millions of dollar to back it.
By all means. If you want a legal free for all, we can do that, and you will lose. Freedom of religion is in the constitution. LGBT is not. Be careful what you wish for honey. You may not like the results of what you ask.