I think its because compsci people know what they need to a greater degree than other majors. It's easier to upsell a computer to someone who doesn't really know about computers.

It could also be possible that compsci kids have a powerful desktop at home, or are more savvy with university cloud computing, for any edge cases or computationally expensive tasks.

I use vscode's tunnel from my MacBook Air to my Archlinux desktop a lot.

The MacBook Air has ~16 GiB RAM. The Desktop has 128 GiB, and a lot more processing power and disk space.