Yes but the original founders did that. Zuckerberg took it from them and immediately lied about data sharing, there's a reason why the founders left in disgust
One of the co-founders, Brian Acton, has funded most of Signal (~100M USD) in his post WhapsApp life. It is a very hacker mindset solution. Instead of turning to the law to enforce nebulous claims against a megacorp, make a better product with the money you got from said megacorp.
I know "nothing to hide" is never a strong argument but even if Signal is a CIA honeypot, if it keeps my personal conversations from becoming marketing fodder, sign me up!
I'll never understand why people don't place value on integrity. I mean day to day people and not stockholders. Zuck controls what happens at Meta, it's not a board decision on stuff like this unless Zuck tells them to do it.
Saying he “took it from them” is outright dishonest.