I'm using openbsd on a several laptops at the moment, a dell x55, a thinkpad x230, and a thinkpad x270. Everything works on all of them - sleep, hibernate, wifi, touchpad, colume and brightness buttons, cpu throttling, etc.

On one of them I use a creative bt-w2 bluetooth dongle for audio output, openbsd removed software bluetooth support due to security concerns. The latest wifi standards are not supported on these models, which doesn't bother me. It's not the size of your network, it's what you do with it! I don't mind not having the latest flashy hardware - been there, done that.

I have to pay attention when I purchase hardware, and am happy to do so, because openbsd aligns much better with my priorities. For me that includes simplicity, security, documentation and especially stability through time - I don't want to have to rearrange my working configs every two years cuz of haphazard changes to things like audio, systemd, wayland, binary blobs, etc.