Those are among the worst, yes, but even the existence of subs like gonewild can have the effect of repelling potential users, especially those who don’t have an understanding of how the site is organized.
They read an article that talks about a sub for content they find objectionable, and from that point on, Reddit is “that site for (insert content they dislike here)”.
Much the same, I’m concerned that Lemmy will be known among those users as “that site for communists that support the CCP”.
Ugh, I’m so sorry you had to experience that horrific playoff series.