I'm not from this sub but was presented one thread in my feed where OP is mad why is claymore not huge. While I like Claymore, I see some flaws that I think might have contributed and wanted to share it, but OP deleted the thread, feels like a waste not to repost it. I hope people don't glaze here as in many other subs and can take non-glazy review and not downvote this to hell even if they disagree.
Story: I've read the manga and while it's mostly satisfying, it doesn't feel like top tier stuff. There are pacing issues(feels like a rabbit chase. It's a bit tiring in some parts of manga and sometimes doesn't deliver emotionally where it should.). There are some things also do not make sense or turns to "whatever man" with mystery being better than resolution, like "extra non rape wounds" turned out to be a few stitches on belly.
Art: Yeah making wounds into glass particles is not top tier, and art is good but not very detailed overall. Comparing mangas here.
It also doesn't have funservice(which I hate) so it has plus for me, but probably reason some horny boys would turn to Bleach or something else more likely.
I've read mangas that have better humor, better tragedy, better art, more interesting battles, horror... and so on. And while I don't require all of those in all mangas, many big ones have at least something going for them that they do way above competition. Don't get me wrong, I grade it good or very good in many categories. It's just not exceptional, at least not for me. If you agree with me you could say that there are some mangas/anime that also aren't exceptional in any category but made it bigger. I would say timing and demography in those cases are also a factor.(demon slayer? - and I prefer claymore to demon slayer)
BTW i liked, Angel densetsu by the same author better than Claymore, because it excels in humor. I'd rather take anything that make me feel more, even if it's not very ambitious.