Thankfully @Mudd has already summarized what I was going to write, once again 
My disappointment is now total and (possibly) definitive. I’ve never seen a more blatantly contrived villainous plan exploiting a more blatantly stupid contingent plan (that of Starfleet). To be correct, I have seen it many times (see later), but I didn’t expect to see it again, and not on this scale. I mean, it is embarassing how anyone, in Starfleet, could have possibly conceived of such a plan of getting all Starfleet…connected?? I mean, not just networked, which would make sense, but actually automated?? Did anyone read what had happened with Daystrom’s evil computer? Did anyone ever heard of…well, the Borg?? Speaking of which: I agree with @S-Hauen_Jarok , they just resurrected (again?) the big evil buddies as usual…just, this time, after the previous season, it wouldn’t make any sense at all!! There’s a huge Borg 2.0 (in the absence of a better definition) ship just in Sector 001, which is part of, or at least allied with, Starfleet, and nobody call them? Even worse, they didn’t know anything about the evil Borg plan? They didn’t find any evidence with all their super-human artificial capabilities? Nothing? They just threw them at us last season and then…forget about them?
Seriously, it is ridiculous. And I’m angry, in all honesty (in case it wasn’t obvious already by reading my rants). Starfleet assimilation is ridiculous. The way it happened is ridiculous. The boomer-nightmare of all young people getting assimilated and acting as one against the older ones is ridiculous.
And the trope of the all-connected fleet of new ships getting rogue and being defeated by older, but non-connected, and thus more effective, ships, is getting definitely…old. It happened dozens of time in dozens different franchises/movies/series. C’mon!
And the potential damage to the Star Tre galaxy is staggering. How the hell would it be possible for Starfleet to recover from such a thing? Seriously. How? Not just in terms of material losses (starting with the Spacedock, which I bet will just be shown exploding at the very beginning of next episode, and let’s remind that a spacedock houses thousands and thousands of people), but also of morale, of psychological suffering from those who’ll survive and for the de-assimilated people (because we all know they will get de-assimilated, don’t we? And how you pass over the fact that you killed all your older crewmates and other innocent people? Or they will just gloss over it with a wink?), of reputation (both inside and outside the Federation…who would trust such an organization which so grossly miscalculated dangers, anymore??). Who would choose to enlist in Starfleet after all this? What Federation member would accept Starfleet as the main space branch of the Federation anymore? And I could go on and on.
And they even killed Shelby! Just for fun. Just after the usual, useless, speeach about how beautiful Starfleet is (which is getting more and more to look like a joke the screenwriters give us; it seems they think exactly the opposite).
At this point, let the assimilated fleet just blow Earth up, and get done with it, and then pretend it’s all happening in a huge Star Trek multiverse.
I was happy to see finally an Odyssey on screen, and the Big D (though I believe it is another sign of excessive nostalgia), but all of the rest just destroyed everything else.
And I hated they killed Shaw (as I predicted at the very beginning of the season, though not in the way I expected), his was an interesting character.
And my apologies for all my long rants.
And yes…that’s because I’m really suffering inside.