This is impressive, and I'm glad people are working to preserve software freedom, but I'd rather just support the alternatives.
Why give them the perceived install base, and profit? Why not get a steam deck or one of the many other handhelds that you have - day 0 as a feature - root access on?
There are a number of great studios which happen to have financial ties to a given publisher. If you like these studios you have no choice but to indirectly give money to the publisher in question.
One obvious example for Nintendo is Monolith Software.