Rogues (and other classes)
are balanced around how they feel. That’s why rogues perform about on par with fighters in terms of at-will damage despite the fact that they “should” do better at-will damage to compensate for their total lack of ability to nova. That’s the level damage output that was found to feel right for the majority of players during playtesting.
If the rogue feels fine to you and your play group with only one attack per turn, nothing is wrong with that. But it is below the point that playtesting found most players felt was right, which means most players would probably think they felt too weak in your games. Of course, most players don’t play in your games, only the players who play in your games do. And if those players think rogues feel fine, there’s no problem. However, it does seem to be a problem for a lot of groups that the DM rules on stealth in a way that at least some of the players find makes rogues feel too weak (especially if those players are mathematically inclined and are familiar with the mathematical assumptions underlying the rogue’s design.) If that’s not your group, great! No problem. But it is many groups, including seemingly
@jayoungr ’s.