If I click on a search result that goes to discord will it take me to somewhere I can see it?

I assume not, which is why I still think this is worse than using normal forums. You'll probably get a link to join the relevant server, and will probably require a Discord account to do it.

Which is very annoying and unfortunate, but is a huge step up from all that content being entirely undiscoverable.

It's possible that someone could write a bot that displays a mirror more exactly. Not sure how easy it'll be to both do that and not get taken down, though.