I have the Nova Pro Wireless, not the 7’s, but they have the 2.4GHz dongle as well and I’ve had no trouble getting them to work in Linux. The Steelseries GG software I have not had luck getting to work through wine.

Someone asked the same question 9 months ago on r*ddit: https://www.reddit.com/r/linux_gaming/comments/zirn2x/any_steelseries_nova_7_owners_who_can_tell_me/

On a similar note, has anyone tried the Audeze Maxwell on Linux? It has both 2.4ghz and I believe BT LC3 audio support, which Pipewire is starting to support too (although most people won’t have a BT adapter that supports it).