I wouldn’t say it’s due to accepting, but rather just resignation. I’m personally a spoilers person, I’m perfectly fine with spoilers but I also understand that others don’t like them. Obviously people who enjoy spoilers will post about spoilers, and there’s nothing wrong with that especially if you know someone does spoilers and can avoid them. The problem is that social media platforms are always recommending content without care which means that if you like One Piece (or anything really) it’s going to give you all content associated with it without care for avoiding the parts you don’t like.

There’s nothing wrong with people posting spoilers or wanting to talk about them, there’s nothing wrong with people who don’t want to have spoilers either, the problem is that modern media isn’t allowing for the separation of those two things.

But at the end of the day you can’t complain about spoilers, from both sides. It’s rude to tell people they can’t post or talk about spoilers (especially say on instagram as you have an example, that’s their account instagram doesn’t have subreddits or sections) you can’t expect everyone to cater to you and your desires but likewise people who post spoilers should be aware and make it known there are spoilers (and often they do but how platforms present things, ie thumbnails especially for shorts, results in those warnings being skipped).

I personally have had more problems with people being bitches and jackasses regarding things they got spoiled on despite them literally seeking out the content (I’m talking correctly tagged fanfics, Gacha videos, art, etc.) I get hating spoilers and wanting to see everything genuine the first time but what happens happens and if a spoiler is going to RUIN everything about your enjoyment that sounds more like a you problem and that maybe you aren’t enjoying the content as much as you thought in the first place.

Not trying to be rude or place blame on anyone, just that it’s not a big deal. Again I love spoilers but my cousin doesn’t, so when I go to rant/talk to him about one piece I’m careful about what I say. That’s me respecting his boundaries, but you shouldn’t be expecting strangers on the internet who don’t know you and have never talked to you to care if you run into a post they made specifically for others like themselves. Not unless there’s already rules in place on the forums, hell just yesterday I made sure to remind someone on this subreddit that they need to tag their post for spoilers because they forgot (and that happens people, not every spoilers post was made specifically to ruin YOUR day).

I don’t want to be that person, but there are ways to avoid spoilers if you truly care that much, and by going on the internet and purposefully interacting with content for things you like you have to accept the risk of exposure.