wait what happened? Somebody lost their shit because I like Allegri?

Mehh. That's childish.
Somebody mentioned he'd be curious to see what another manager would do with this team. I'd be nervous we'd even qualify for CL if i'm being honest (Pirlo came close).
The most important thing isn't even if Allegri is staying or going. No coach turns this squad into a CL contenders. Or even scudetto material.
A lot has to happen for us to become great again. And it won't happen overnight. With, or without Allegri.
Marotta built a great team. Paratici took over, went all in, and left us broke, facing serie b threats. Now it's time for Giuntoli to start another era and build his team. If the team becomes good enough, we'll start winning again. With or without Allegri. Until then, it's Allegri's job to make the most of Gatti, McKennie, Weah, Kostic, Miretti and Iljing Jr etc.
This is our worst team since we came from serie B. I'd even argue that our serie B team was better than this.
The club desperately needs CL money and doesn't want to take a chance that might backfire and put us under. Allegri was a responsible decision by the club. Secure CL money, so we can start rebuilding this. This time, with hopefully a bit more vision behind it.