Twitter makes it super easy to do mass warrantless surveillance, because Twitter gathers millions of people together in the same searchable public space. It's a honeypot.
What's dangerous about the "public square" concept is that Musk doesn't just want a public square — one public space among many, one among equals — he wants the public square, a monopoly on online conversation. "I think I see a path to Twitter exceeding a billion monthly users in 12 to 18 months" https://twitter.com/elonmusk/status/1596751751532937217
We shouldn't have all of our conversations, political or otherwise, in one place. That's a giant mistake. We need decentralization for our own safety and freedom.
Look up Talkwalker, Hootsuite, Nexalogy, etc. Governments and other institutions use these tools.
Spreading the conversation elsewhere doesn't change the ability of these analytics platforms to cover them, although it does introduce more noise into the signal; the smaller the forum, the less an impact it has in the analytics rankings. If you slice up the pie into a ton of tiny chunks, the data received becomes less useful.
That said, some of the uses of these platforms are completely reasonable and very pro-social. We kinda want law enforcement to know if Jimmy Bullets just posted that he's gonna shoot up grade 4 English tomorrow.