Laptop use varies quite a bit. Some people won't touch a desktop thinking of them as old tech but with work from home most people like to setup an extra monitor and sometimes a wireless keyboard and mouse. Essentially you have a lot of "laptop" users who may as well have a desktop because they have so much extra plugged in it's essentially stationary anyway.

As far as this product goes though I don't think it matters too much. No reason you couldn't just mount it over the laptop screen. The device is about 7" tall so you'd have to push it to about 14" but that should still be close enough to get plenty of heat.