because the UX sucks for the vast majority of people.
No, it isn't.
The UX is fine. It's clean, fast, and functional. Anyone who is too fancy for "old Reddit" can stay on new Reddit with the bots and Xers. They'd just come over and be nothing but insufferable anyway.
o.o
Multiple front ends and themes are available. In the end, we're here for the conversation, not fancy graphics, sounds, or CSS trash.
If someone can't get past picking a server or simple graphics, the likelyhood of them being any benefit here is minimal. The more is not always the merrier.
What UX? At least my instance have like 5 different forms to access, in the browser, then you have the apps too. There's no way all of those UX are not good for you