They're not comparing it to a MacBook, though, they're comparing it to an iPad Pro.
We could go through the whole dance of figuring out which weighs more and what does what with whom and where, but I think it's probably easier to say "different people have different priorities". If what you want is a lightweight Linux laptop, the iPad is never going to give that to you. If what you want is a tablet that you can connect a keyboard to when you want, an X1 Carbon is never going to give you that. And if that is what you want, it's nice that the iPad can run a great ssh/mosh client that's capable of running Visual Studio Code in the cloud.
We could go through the whole dance of figuring out which weighs more and what does what with whom and where, but I think it's probably easier to say "different people have different priorities". If what you want is a lightweight Linux laptop, the iPad is never going to give that to you. If what you want is a tablet that you can connect a keyboard to when you want, an X1 Carbon is never going to give you that. And if that is what you want, it's nice that the iPad can run a great ssh/mosh client that's capable of running Visual Studio Code in the cloud.