There is a much more sinister issue that Google is trying to resolve with this: it's currently possible to stalk somebody by placing a tracker fob in their bag or on their car, so long as you know the victim's device doesn't support it.
Suppose some creeper with an iPhone is stalking a victim with an Android phone. So long as they use an Apple AirTag, the victim will never know they have a tracker trailing them wherever they go. And in reverse, the issue is the same.
Apple isn't concerned about this, because they hold a monopoly in the market they care most about and can leverage this as an iPhone-only feature. After all, so long as you have an iPhone, you'll be warned about an AirTag you don't own following you. Apple wants to leverage this as an exclusive safety feature and have no intention of allowing other devices to do the same.
Apologies for providing this background as I know that this goes against the circle jerk of accusing Google of infringing our privacy. Feel free to disregard this context of it being beneficial to our collective privacy.