Good. Let them put their "regime change" money into generally useful infrastructure like Signal instead of propaganda for their favorite rebel group or some other narrow political goal.
It all sounds fine, until we are reminded that AWS itself blocked Parler, no chance of recourse and completely within the law. With that in mind, how confident are you to think that CIA's support of Signal goes as far as they can ensure they can control the network?
The original reasoning why WhatsApp used the same crypto/messaging format as Signal was in large part (aside from it being Good Crypto) to make it harder to selectively block TextSecure/Signal based on message content.
So the threat model is now changing (if you're trying to avoid censorship by the US govt etc) and that's going to be interesting to watch unfold. Matrix is much less susceptible to this being an existential threat, of course.