Got a MacBook for work recently, paired it to my AirPods I had for months, and it was funny noticing you could enable FindMy for them from the settings but they wouldn't show up in my devices on the map. Indeed, for this you need to pair with an iPhone or iPad. However it did enable the beacon on the airpods as the next day AirGuard notified a device was following me. And since, I can't disable it, the switch in the settings doesn't disable the beacon AirGuard still detects them. Even within their ecosystem they'll punish you for not being fully "part of the familly".