What TTRPGs aren't about is fucking around for four hours doing improv theatre as a form of shitty therapy. Talking back and forth in character forever and putting on stupid voices to do it. Just go be a theatre kid and fuck off.
Yeah, hard disagree. There are tabletops designed for such a playstyle and there are tabletops which are designed for opposite playstyles. D&D is - or, rather,
was, for majority of its history - clearly not well suited for extensive roleplay, it doesn't provide mechanical structure for it, which is why it ends up being a detached improvised theatre. D&D is a questing tabletop game. It structures itself around quests which are adventures when it comes to their content. It works best if its a quest about killing things, but heists or investigations can work as well.