You do realise theres a middle ground between kissing every single waking moment and "oh look at this homosexual crush we'll joke about but never actually go through with lol" right?
Well seeing as how Sakura trick is no sex and no actual relationship between the main two girls other than their daily kisses there isn't much room in between those two.
Also the comparison lacks merit because on the whole you'll generally find that most of the het crushes in manga eventually happen even if its just in the epilogue, homosexual relationships rarely if ever have this luxury, they just remain jokes and shipping fuel forever.
That's just simply not true. A lot of het crushes go completely unrequited. Mathematically most crushes in harem shit goes no where. Gay relationships are no different. Some progress and some don't. You are acting like none of them progress, which is just not true.
The harem comparison is straight up not applicable because harems exist to self insert the main character into a situation with a ton of guys/girls all vying for them so the audience member can pick their best girl/boy while also not alienating any of the audience that might come from one actually picking a definitive character to pair with, most harem manga literally just exists as a quick way to get popular and most of it is utter trash.
So you are saying that harem manga is literally just het baiting? Nothing but tease with no actual end game relationship? How is it not applicable?
And no I do not get mad at every gay crush that doesnt go anywhere, I get frustrated when it becomes a trend of which it has certainly become, not nearly as bad as the good ol' bury your gays but it is starting to feel exploitive, specially since I just got off talking to my girlfriend about a bunch of kyoani shows and remembering just how many of those bait the living shit out of the audience.
Now that just doesn't make sense. If you are mad that gay crushes has become a trend then how you are you not getting mad at every time it happens? Also, you are just wrong in general. Izetta, Flip Flappers and the currently airing Princess Principal are all recent shows that progress beyond just subtextual crushes. It sounds like you want slice of life shows like New Game and GochiUsa to go from sitcom to romcom and that isn't going to happen. They have their genres and they are going to stick to them.
And the whole KyoAni thing is way overblown. What shows have they done that are queerbait except for Hibike?
Finally for this series specifically its honestly just boring writing that EVERY relationship in this series can be summed as "gay moments sometimes, never followed up on" ugh this is why K-on is one of the only CGDCT series I can honestly say was actually good and not just enjoyable (till the movie anyway which is something I personally despise)
Except Kou and Aoba's sempai/kohai relationship that is purely professional. Aoba has a purely professional relationship with almost every character, so your claim that "every" relationship is queerbaiting just seems bizarre. Every character has about 1 gay-heavy relationship with another character while their others are purely friendship/co-workers. And funny that your favorite CGDCT is k-on despite just saying how much Kyoani queerbaits.