That seems a little extreme. Another device won't have the advantage of Apple's "Find My Network". Competitors like Tile have a much smaller network. Or devices that rely on cellular are much larger and don't have a battery that lasts for years. Or even if there is an AirTag alternative that's just as functional, it's less well known and would-be stalkers will have a harder time finding it and using it. So by not supporting the stalking use case Apple is genuinely making it a little harder for stalkers.
But also, I agree that this is about reputational liability more than some higher desire to do good. But IMHO it's also doing some actual good.