The company doesn't pay for hardware devices at all (all staff are full-time). When I started with the company a few years ago, I used my personal laptop with a separate user account called "Work".

A colleague I used to work with did the same. They had a MBP and set up a secondary user also called work. They had an "incident" on Slack involving a crude photo and eventually quit due to embarrassment.

I sucked up the cost and bought a separate device out of pocket. My personal laptop is 100% personal and my work laptop is 100% work (I refuse to even access email from my personal laptop). I also have a work phone that's 100% work.

Don't mix business and personal life unless you have literally no life outside of work.

Unrelated: is it weird to buy your own work computer if you're remote? I don't get any reimbursement from the company... I've always found this odd.