There's software in your controller, so yes.

Now, shot: BF6 won't let you use DS4Windows, software for using newer Playstation controllers on Windows.

https://forums.ea.com/discussions/battlefield-6-general-discussion-en/ds4-controller/12406905/replies/12407412

Extra bonus on the above: an EA rep says "Using third-party software to enable unsupported controllers may put you and your account at risk of violating the Terms of Service." You know, banned.

Chaser: Certain Xbox controllers won't work with BF6, either.
https://forums.ea.com/discussions/battlefield-6-beta-feedback-en/xbox-controller-not-working-on-pc/12428829

There's software in your controller, so yes.