Sadly, we got a preemptive attack on Earth in ENT when the Xindi test probe kills 7 million people and yet a lot of fans couldn't stop bitching and whining about that and how it didn't and still doesn't make sense.
I wasn't around for ENTERPRISE during its run beyond the initial 8 episodes, so I missed out on all the bitching and whining during the Xindi arc. Watching it years after cancellation, the Xindi arc felt like a needed shot in the arm and I assumed a lot agreed that it was an improvement over what had been delivered by Berman era in the last few years. And yet I guess people still complained as heavily in the third season as the first during its run?
It'll be interesting in later years after DISCOVERY finishes its run to hear newcomers' thoughts on the show, as the whining and bitching will no doubt be focused on whatever new Trek show is running then.