This game prepares no one for raid/hard content

[TalithaSolarien]

You cannot unsynced content from current expansion, so you shouldn't have a problem there. If you're talking about past expansion content, even savage raids are done unsynced, let alone extreme trials, unless you have a dedicated group that wants to do it synced, and sometimes you can have such a group, even going as far as doing min ilvl.

There is a discord called Starbreakers Network for exactly that reason (running stuff synced and/or at min ilvl).

That being said, getting learning/clear groups for actual Ex Primal content gets harder the older the content is (this usually happends around 4-6 weeks after release). Hades Ex is an outlier, most PUGs (at least on my DC) have abandoned trying it already.