You can be angry and still support the project.
3.0 is literally a year past due. This is not a hyperbole or a fabrication, 3.0 was originally supposed to launch in late 2016.
It's okay to be upset about that, a year delay is a long time.
It's okay to be frustrated at the state 3.0 is in right now- it's not fun to play. That's a plain fact for a lot of people- it's buggy, the FPS is frankly absymal, some ships are still broken (e.g. like half the Cat's doors don't work, EVA hatch doesn't work, "parking sensors"), there's very little content right now.
People want to hop into 3.0 and want it to be worth the nigh year delay, and right now it's not. Will it get better? Maybe. Every patch (well....almost every patch) makes it better. But "getting better from a buggy mess" and "being good" are two different things subject to everyone's personal opinions and bias.
It's also really easy to just shout stuff like "stop crying, stop hating, stop whining, stfu if you don't like it!", which doesn't do anything constructive except giving yourself a pat on the back for defending CIG.
Fact is, pretty much the same thing happens every major patch. AC 1.0 was the "big patch" that would fix things! Added in the Mustang and Gladius, missile mechanics for EM/IR/CS, and fixed a bunch of bugs! It was also like 3 months late, and people got bored of it pretty quick. There was also the hilarious bug where if someone was playing in a Cutlass, it would crash the whole match because the death animation where it spun off into bits ate all the server memory. Good times.
Then SC 2.0 was the "big patch" that would make SC playable and enjoyable- finally a big open map, with multi-crew ships!!! Then people realized that server/client desynch was fucking absymal, turrets were practically useless to use, and that at that state there was really nothing to do besides fly around to the comm-links and look for some fights.
Then 2.6 was the "mega big patch"- STAR MARINE (weeks, not months :ok_hand:), and people were stoked. Then it dropped, and people realized that it's, per usual a buggy mess.
It's the cycle of hype and disappointment. Part of the Alpha/Pre-Alpha or whatever we're at right now, but I can't really condemn people for getting hyped about the NEXT BIG PATCH THAT FIXES EVERYTHING!!11!! when people, both on here, reddit, and the official forums, act like Jesus complied every patch from liquid gold.