You are able to revive players through walls in co-op
I think it's more likely that there simply isn't a line of sight qualifier for reviving (and the same for magnetic link). It may be an oversight, because they thought the distance wasn't enough to be an issue, or it may even be intentional.
If it's intentional, then it's something to work around as a builder, if raiders can get behind something, build it up so they can't get close enough to draw in ammo or revive.
maybe one way doors are intentional and something to work around as a raider, if raiders can't get behind something i won't have to build it up.
As long as they dont force you to ######### for it, sure. I've used one-ways as alternate routes.
much as people don't think being able to get into a space you can't get out of isn't intended, i don't think being able to pick something up or resuscitate someone you can't touch is intended.