They think people will come read it on their website, with their reader (and bringing them money through their pateon, no matter what they say, in the end that's all it's about)
But what they forget is the are not the only translators. there are dozens translators, and hundreds to thousands of manga, manhwa, manhua, lianhuanhua, pixiv/twitter comics and the likes, and people won't keep a bookmark for every single title they read, which is why they use aggregators.
And by removing their translations from "safe" aggregators (with links to the translating teams' websites and all), they will just push their readers to cancerous things with f#cktons of ads (like kissplague) who just vampirize their work without even giving credits to anyone (and won't let them remove anything)
Also, since they are unlisted from dex, how would anybody know about them or their translation ? (which team was it, btw ?)
Basically, everybody loses... except kancermanga