As someone who owned 2 System76 machines, I would not say that noise ranks very high among issues they should tackle.
They're junk by every metric I know of. Expensive, too. They have nothing going for them.
Their build quality feels poor. Sometimes it's hard to tell when an issue is just a vicissitude of using Linux or their fault, but I would overall not recommend.
I would be willing to give them a shot one again one day (there are so few purveyors of pre-installed Linux computers), though not for the ~$1k Thelio costs.
Right now, WSL is working great for me, but Windows seems to be getting increasingly aggressive with wanting one to use their search, etc.