Okay, someone explain to me cus i apparently don't have the critical thinking skills to figure it out on my own.

What does Meta want from joining the fediverse? What is the draw for them???

There's a business strategy called embrace, extend, extinguish that they'll try to use to snuff out the fediverse.
Embrace, extend, and extinguish - Wikipedia

I think it’s this. They’ll make a bespoke federated service, collect all the data of their users (and all the people on other networks their users interact with), make it all shiny and fancy and add a ton of improvements most networks don’t have yet. And if they can reach a critical mass of users, they can track a huge cross section of federated activity, and force networks to play by their rules or lose access to their entire userbase. It’s the same thing google did to email.

I'm not sure blocking Meta is worthwhile in the long term. Say what you will about email, you still have some degree of choice over your host. I want better for the fediverse, but that's still a marked improvement over mainstream social media.

In the short term, Meta wants to kill Twitter by collecting all its A-level users. I think this would be good for the fediverse, these are news outlets and poltiicians and etc making posts most people want the option to see in their feed. These are also users who want no-fuss platforms with some amount of "customer service", and mastodon.social is simply not ready to provide that.

The issues it poses to re-centralization are an inevitable threat as the Fediverse grows. Unless there is a concrete plan to build protections and this is a stop-gap effort, I'm not yet convinced it's worthwhile.