Mahjong

It took me a little over a year of playing, ~1100 East games, ~400 South games, and several failed yakuman waits, but I finally got one!

Link to the game below if anyone is curious. I Yakuman in East 2 and end the game, so it's short.

https://mahjongsoul.game.yo-star.com/?paipu=230915-dc23ecde-d0c6-46fd-ab4a-bddce5d9e57c_a907387108

In last round's 15th turn, 1st place decides to hard fold upon picking a 6man by dealing a 8sou, which breaks his tenpai. Folding at this point is understandable. What I don't understand is why he did this with a 8sou upon receiving a 6man. After all, both the 8sou and the 6man were safe against me, and neither was safe against the two other players. There wasn't even any suji for those! So that's my question, why did he discard the 6man and not the 8sou? Was it because the 8sou was safer against the two other players, and if so why?

I realize this is pretty subjective but I'd like your opinions. The character is implying that calling in this situation reduces his chances to win and would have been unthinkable during the Showa period for some reason.

However I don't see anything wrong with that call, to the contrary it looks like the obvious course of action to me.

Aiming for sanshoku does not seem to reduce his shanten, it secures the dora and even unlocks a double sided wait ; he might also trade this double sided wait for junchan if he gets a pair of terminals later, giving him a shot at mangan. And all of that without being forced to discard by a riichi.

On the other hand not calling here would likely mean riichi only on a single wait which sucks...So I really have no idea what Showa players were thinking

I realise that I'm kind of at a point I'm not learning anything new and I think some video reviews of games would be good insight. I'm struggling to find anything that goes over ranges of skill. In my head the example is GothamChess but for Mahjong

Anyone feel like this #Mahjong Soul event was super easy? I feel like the last one was a lot more challenging and took some time to complete. I wasn't able to play for a week or so, but knocked the entire set of quests out in one sitting.

So usually I played on FFXIV, so now I'm starting on MJS since my subscription ran out. I really like south games more, but I've been running East-only games in bronze room just so the game can end quicker since playing a drawn-out match with people who will just rush open yakuhai/tanyao hands is not exactly fun.

Anyone been in that situation? :P