The only thing that I think is a little complicated these days is make sure that you’re not reliant on a particular Windows-only app. For the vast majority of common apps, you’re going to be fine, and it’s sounding more and more like even gaming on Linux is not only fine, but getting to the point of being the best way to do it. If you do have a particular app you rely on, I’d look into the various ways that you can get Windows apps running on Linux (which can be a little tricky, but usually not too bad.) But even like 10 years ago, I built a machine for an elderly family member, put probably some flavor of ubuntu on it, and I never had to troubleshoot that machine.
The only thing that I think is a little complicated these days is make sure that you’re not reliant on a particular Windows-only app. For the vast majority of common apps, you’re going to be fine, and it’s sounding more and more like even gaming on Linux is not only fine, but getting to the point of being the best way to do it. If you do have a particular app you rely on, I’d look into the various ways that you can get Windows apps running on Linux (which can be a little tricky, but usually not too bad.) But even like 10 years ago, I built a machine for an elderly family member, put probably some flavor of ubuntu on it, and I never had to troubleshoot that machine.