This is just like the majority of communities moving to Discord over Forums. The barrier to entry might be a lot lower than getting a VPS and hosting phpBB or whatever, but the discoverability and searchabilty has gone towards 0. Everything is just moving into opaque black boxes.
Your comment sparked a thought -- maybe this is the "Dark Forest" of the Web:
Either your site's content stays hidden behind discord, or an LLM's bot/minion scrapes all your content and makes visiting your site superfluous, thereby effectively killing your site.
This is an interesting thought because there is probably a real dynamic like this with some kinds of content, but as an HN comment it is also somewhat self-refuting.
PHP hasn't failed me yet. Been using if for about 20 years. Not heavily but it gets the job done and it's still improving. It's really quite sane if you start comparing it to the alternatives. It continues to 'just work'