Fair, this is coming from a place of trust my government to handle this stuff since X isn't going to. (Canadian) I agree with what you posted thats why:

1) I prefer open access and because of the reasons you posted, so others can hold the private company accountable

2) This is capitalism if they don't see profit they aren't going to do anything. So I think this is an interesting case for a pure profit/cost saving argument to have that open access to user posts.

3) social media as it is now is measurably bad for society even without propaganda

bonus) I like seeing how Elon, touted as a genius, has continuously fumbled X and somehow making it a more exaggerated place that he said it was before his purchase.