Yep, it's not as black and white as some on here are claiming.
Mercedes have upgraded the car a whole lot more than Red Bull have this season according to AMuS.
https://www.auto-motor-und-sport.de/formel-1/f1-technik-analyse-aerodynamik-upgrades-2022/
Why. Is that against F1 rules and budget cap.
They have had to do that because of their underperforming car. That still is underperforming.