And be happy that Japan's work conditions are slightly improving to the point where they can slow down or take hiatuses, instead of making them churn out regular chapters until they died from overworking like in the old days.
I'd say one of the things that doesn't help at all is whenever they get an anime made for their series.
Like, yeah it's great exposure, but if you think about it I feel like it makes things worse for them. Weekly artists already have to crunch pretty hard with the series, but when it comes to having an anime developed, a lot of times they're involved with that to, whether it be with character design/concept art, or clarifying whatever so the writers and animators know what's going on. I imagine there's many other things they gotta deal with as well, but those are just some ideas.
For the longest time the anime work industry was pretty damn bad. If your series got picked up to become an anime, it either released every week, year round until either it ended, ratings drop, or you the artist can't keep up with the demand to keep furthering the manga. The only other kind of release were those that adapt the manga to a certain point or to a certain extent, before either ending entirely or going the anime original ending route that almost guarantees the anime will never return.
I feel like since fixed releases with months or longer in between seasons has helped the working conditions for manga artists, to some extent at least.