While yes APAC fan indeed say they are world champion material, i would say ( while i am def reaching a bit ) it is somewhat justifiable, considering yes abit of recency bias. First off last champion we of course have the 2 teams that qualified from APAC in the top 8, even taking maps of some pretty big notable teams and even qualifying over Envy ( yes to those that say they were underperforming, maybe so but it was a really big team to win against back then )
Then we have master 1, with PRX run being stopped by basically their kryptonite, ZETA ( East Asian Teams with some really high mental strength ) finishing top 4, knocking out TGRD and G2 ( both 1st seed of NA and EU ). Again people will say they underperform, got a srsly fluke run etc etc, but a win is a win, a lose is a lose, no matter how cinderella-like or fluke-like a run is, they still qualify over other competitors from their region and esp TGRD was hyped to be this new sensation that would crush the international landscape.
Plus people did look down on apac with the minor region term, esp with people saying APAC should have atmost 1 slot becuz we are not as good etc, both after the DRX loss and before the master started, which is why when PRX won it became somewhat of a meme on VLR for abit.
Lastly OCE fans are all-round great people, just a select few who are really passionate about their region which im fine with cause like look at any region during international competition, the shit-talking and passion is crazily high. The only reason people find OCE fans ( select few no name dropping tho cuz i think most ppl know ) annoying is cause of how they brought other teams down esp one with some really big fanbase like PRX who have fans internationally and locally, so OCE got some hate for that and the BOOM lies aswell but i dont wanna dig deep into that cause thats their problem not mine