It's nothing to do with baraag, the problem is that they're blocked by misskey.io. Been that way for a couple years now.
The reason why misskey.io appears reachable by baraag is because server-level misskey blocks doesn't prevent public posts on misskey.io from reaching baraag's database. Your interactions from baraag that target misskey.io accounts don't get reflected in misskey.io's database.
pawoo doesn't block baraag. I'm not sure why misskey.io does, I suspect it might have to do with how the admin interprets Japan censorship law as it pertains to online service providers, then again they also block a lot of other instances https://fba.ryona.agency/?reverse=misskey.io (scroll to the bottom)