Yeah, it is. If Jim Reaper, who's like, Nocturne God, says so, it most likely is. This also lines up with what I've experienced, because I regularly savescummed negotiations in Nocturne when I played it, and this happened a lot lol.
Atlus is removing P5R's streaming restrictions... except not really
株式会社アトラス（以下「弊社」）より販売されております、『ペルソナ５ ザ・ロイヤル』リマスター版（Xbox Game Pass／Xbox Series X|S／Xbox One／Windows／Pla...
You're officially allowed to stream the third semester, but they're not actually removing the in-game streaming restrictions. Hell, they even straight up tell you to buy a capture card AHAHAHA. This fucking company man I stg LMAO.
PS4, PS5, Switch, and Steam versions of P5T just got announced
Expecting P3RE and Metaphor multi-plat announcements to follow shortly.
There's not really a trick for Nocturne negotiations lol. Whether you succeed or don't is determined the moment you start one, so if the game decided to not to flip in your favor, there's really nothing you can do to change that.