Since when are subgenres a thing and why aren't they available to add in the drop box? When is "Melodrama" added?

WARNING: bit of humor (not rudeness) ahead. Warning since it may not transpire as intended, so read more "tongue in cheek" and not insulting, ok? Ok!)

This is a first for me! When were they added? I did a search here and I see questions dating to 2022.

Never came across a movie with so many as I did now in:
https://www.imdb.com/title/tt0021884/

Also how many sub/genres total can a movie have? When is it too many? 
IDK about anyone else, but I like things simple. I like ONE genre but I (finally) got used to 3 and now there's a bazillion genres?

Btw, I find the "drama" is overused and abused.
Maybe a pop up to block users before allowed to post, saying "this is what a drama is.... are you sure?" 

Every movie has some kind of boy-girl-meets-dates but is NOT romance genre. Isn't that CONFUSING and going a bit overboard??

Shouldn't there be a limit on genre-ing?

I find a LOT of contributors are MISGENRING films!

(Who agrees?)
The abuse on the "drama" when it's "thriller" or "horror" is out of control.
Considering the genres are in alphabeitcal order, when they ought to be (IMHO) by PRIORITY, and only 3 are displayed (or were, until I found the above) it's all...so...very.... first world problems, no? (But still! Important!)

Back to the new subgenres: 
Can normal people (me) simply not add them? Are they reserved to IMDb staff or superpowered users? 
I find that they give away the surprise plot, for instance "Body Horror" (!) Really? 

(I was perusing an old show (don't ask, K?!) , if anyone were to add that, series be completely SPOILED!)

I mean my favorite subgenre (and IDK if you have it) has always been Time-Travel. Ok I see you have that in *some* films. You have it in 

https://www.imdb.com/title/tt0452694

but you don't have it in:

https://www.imdb.com/title/tt0035423

and I cannot add it (I'm normal, not super-powered!) <G>
And "Feel-Good Romance" I think is insulting: it tells people how they're supposed to feel when viewing it.

Scratch that: it's a SPOILER: we'll then know the movie ends well, "aww" and might be borderline meaning "cheese"!

Also by "Tragedy" ...am I the only one who reads "Melodrama"? (As in "let me go get my violin!") 

Is Melodrama a subgenre? Surely it has to be! This cheesy melodrama comes to mind:

https://www.imdb.com/title/tt0031381/

(Sorry if you like it, but hey it won Oscars so it's fair game for those of us who can't stand the film!)

Will "cheesy" be a genre and "CHEESY MELODRAMA" a subgenre?

<G> as in: Warning: cheese ahead! 

I propose it be! Who will second me? ;-D (I kid, I kid!!) (No, I don't!) 
Actually, it's prob best it won't be: imagine the overuse worse than "Drama".

And today I find when I go grab the URL at imdb, there's a lot more of long stuff that I need to delete (like on eBay past the item number!) past the "?", stuff I always ignore. Why is it a mile long now?? It wasn't like that yesterday, as I was working with stuff and routinely delete the "extra".

Sorry for so many questions. Feel free to tackle as many as you can. 
Thanks for reading and (hopefully/mabye?) answering.

------------------------------

PS: WHAAA...??
https://www.imdb.com/interest/in0000037/

^High Concept comedy??

Look I may be overstepping things here, but to me a GENRE is a SIMPLE WORD to state WHAT you're in the mood for! That's it! "let's go see a comedy!" As opposed to horror or action, or drama.  I don't know about you , but I don't know anyone who has friends who say "Yeah, but let's make it a High Concept comedy!" cos we all be like 'huh?" and they be booted off the friendship club for being pedantic! 

What is the meaning behind all this? Considering that SPECTRUM appears to grab IMDb's info (for on-screen TV guide. and genres for its OnDemand classifications) and so does Google, are they now going to repeat this nonsense ah, uh..I mean... upgraded genre stuff??

I'm sorry but, if I may put it plainly without (too many) people getting offended, it's just plain: (modern)
CRAZY MAKING!!!
There, I said it.