I'm sure this is an unpopular opinion, but I kind of get this one. Unlimited data on your phone is constrained a bit because it's your phone. If you make your phone a hotspot and the whole family is using it to watch videos and stuff (and not paying for their own data plan), that's a pretty big difference to the infrastructure needs.
Yeah. You have unlimited data but they don’t want you to actually use that.
They take the risk that you’re not going to use more than they want you to from your phone but it is very likely that you’ll use it from your computer or if you connect multiple devices to your phone.
I find the idea to be reasonable because they can’t actually supply everyone with unlimited data but they really shouldn’t be calling it unlimited if there are any limits.
Yeah, it's unlimited for you on your phone, and they have estimates and ranges for what that amounts to for people that they use to determine pricing. But if not it's not just you and your phone, but multiple people with multiple uses, those estimates aren't sufficient.