Star Trek Social Club

I don't know, TNG could be up there, but it was also generally influential as a whole, so both its good and bad ended up getting carried over.

The entire exploding bridge trope came from it, as did evil admirals. It also set up the Enterprise as the flagship, with the best and brightest of Starfleet. Which also meant that people generally assumed it to be the norm when it was the exception, and that the hero ship was some special ship, when it was a normal ship of the line in TOS.

VOY Borg are really bad compared to TNG Borg.

They are, but more due to issues with overuse more so than anything. In TNG, we saw the Borg for all of 4 times. In Voyager, they were shown much more frequently.

But as far as the timeline goes, it also wouldn't make sense to show an earlier iteration of the Borg, not when they were severely affected by the actions of the Borg.

I heard PIC stinks because it makes VOY Borg the main villains

I'd honestly argue that which version of the Borg to be a minor issue in Picard. Picard's bigger problem was that it didn't seem to know what it wanted to be, and kept leaping between multiple different plots and story lines, which confuses it a bit.

It arguably have been better if it has taken one of those plots, and run with it for the entire show. Like the matter with Synths and former Borg drones being treated as subhuman, vindicating the concerns Guinan and Picard had in the Measure of a Man, or visiting the TNG crew and seeing where they are now. As it actually was, it seems like the writers/producers felt that now they had Patrick Stewart, they wanted to do everything before it was too late, and the result was a bit of a mishmash.

The issue with the Borg tends to be more that they really aren't very much of a threat by the end of Voyager, and were dealt such a blow that it would be almost impossible to ignore.

Their greatest threat, assimilation, is trivially curable, and it's now known that their assimilation abilities are one of their greater weaknesses. The Federation might have issues with infecting someone with a pathogen to make the Borg assimilate them and self-destruct, but others have no such qualms, and we know of at least one species that did use such methods (Icheb's parents).

Their adaptation is a greater issue, but even older Federation ships, like the galaxy-class saw good effect just cycling their weapons frequencies. The Voyager's ablative armour would be well-studied after they returned to Starfleet, and dedicated anti-Borg weapons would have both been in active development, and also use.

As of the events of First Contact, it's also known that not only are there Borg ruins on Earth that may still be intact and active, but that Borg ships are not as truly uniform as they seem, with Picard pointing out a weakness in a Borg cube that dealt catastrophic damage to it. Local signals, what he felt, scans of what remains of the area, and everything would have been thoroughly studied to determine how to both find and exploit those weaknesses on other Borg cubes, without a former privileged Borg unit at the helm.

It would be difficult for them to retain much of the mystique and terror of their TNG appearance, with all of that now.