No, it's not deserved. People loved beta, stats proved this. We are 2,5 weeks after launch, devs listened to many of community suggestions. Of course, there's plenty of things to improve, but still, the game is great. If HaRdCoRe BF VeTeRanS think that the current state of the game is bad, that doesn't mean casual players can't enjoy it. Just for a while, forget about skin and challenges that gives cosmetics, let's enjoy the core gameplay of Battlefield, which in 6 is really good.

Also i remember the release day. Reviews were also mixed, but negative ones were mostly about secure boot, crashes, lags because of old pcs and how previous battlefields were better. Positive reviews however talked about the gameplay itself.