What’s your use case for cellular on a laptop? At least here in Canada data plans are expensive enough that I could blow through my monthly limit in 30min with a laptop. I would be quite annoyed if my wifi dropped and I had discovered only later that I’d exhausted my data unknowingly
My first iPad entirely felt like a waste of money. Any time I'd want to do something useful with it, the mac was a better choice. Not sure what cellular on the iPad would have ever offered me, but I know why I want it on my laptop.