No they're not. That's blatantly false, they never banned anyone for playing on Linux.
There is zero evidence for this. Whatsoever.
Tens of thousands of Linux users have played BFV on Linux for years, without a single mass ban or banwave. Ever.
You're blatantly lying and spreading misinformation. Please stop.
There was a claim in January 2020 that EA was "banning Linux players," and it turned out that literally the ENTIRE thing was because of only ONE forum post where LITERALLY TWO people CLAIM to have been banned for no reason other than using Wine/DXVK. They had no evidence of this, and EA never said anything, and IT WAS ONLY TWO PEOPLE DUDE. But the community FLIPPED OUT, then after a couple people including myself actually took two seconds to look into it instead of reading a headline and reacting, a bunch of us started pointing out that this was nonsense, and the story died immediately. And yet years later people STILL ask about if it's "still going to get them banned" if they try to play BFV on Linux.
NO, IT WILL NOT GET YOU BANNED, AND THAT WAS NEVER THE CASE.