Something to consider is that yes there are people in player support who hate off meta picks. That is because player support is composed of a large number of humans who each have their own opinions.
It is worth noting that you have provided one case where someone did get banned, and in the comments someone had their ban get overturned. Riot has rules about this specifically to handle the fact that people think differently.
You also aren't going to hear about the times people didn't get a punishment when player support looked over a game because.... no one except the player support agent would even know it was a possibility.
But I guess we don't focus on the positive side enough so here are some examples where I didn't get banned:
I just played 3 games as Nasus, Xerath, and Karthus as APC with an AP rek'sai support each game. We won 2/3 of them and no one so much as commented on our picks in a single one of the games.
I used to play quite a bit of support J4 with flag max Aery and items like Ardent Censor and Grail. There was only 1 times someone got seriously upset and 2-3 other times where people were offput by it at all.
Season 4 frozen mallet Ashe support.
I play Kassadin support.
I played an AP Kog'maw support game where everyone was quite supportive of me.
In other positions I have been playing J4 Mid for a long time as well as the occasional Vi mid game.
Jhin top is funny and I have never gotten flamed for that even when I feed.
People are cool with whatever role I play Thresh/Taric in. Taric Jg is a favourite.
My Poppy builds usually end up being full AD and sometimes appear in the bot lane.
AD Elise Top anyone? Will admit I got flamed fairly hard in one of those games but for the most part it wasn't too bad.
Renekton Support is a mean pick.
Blitz Top into Irelia is a favourite of mine now.
Tank Karma Top.
Quinn Mid.
I don't think I have ever been flamed for playing AD Soraka except in an ARAM game of all things.
AP Raka top is also pretty funny.
Got an Aatrox support game in that went really well.
Darius support has always done well by me, and my team never complains.
I played old Aatrox in any of the 5 positions and no one ever flamed.
I do always ask first so it might not count but I have never gotten flamed for reviving the River Shen meme.
Sure I get flamed on occasion, but y'know what? For how often I play off meta I really do get flamed more for being a terrible ADC player than for doing off meta stuff, and I have never once been so much as warned for any kind of behavior by player support.