I know at least one FAANG company that had (has? don't know) a policy of not using any hardware that was ever used in travel to China. If you had to go there on a business trip, you got a loaner laptop (and got your account severely restricted) and when you got back they wiped and discarded the laptop.

Because it wouldn't really help anything if you still use the same internet connection.

Cause environment. Multiple the waste of burner phones (which are also terrible if you only use them for a few calls) also the burner laptop wouldn't cost much less than a shitty Chromebook, possibly the same thing.