Possibly, without the ability to turn it off
All rumors have long been attributed to the Nintendo Switch 2 portable game console as an Nvidia platform with DLSS support. According to recent reports, DLSS will be used in almost all games for Switch 2.
It won't be a requirement on Nvidia's part, but DLSS will simply allow developers to achieve more of what they envisioned, both when creating games directly for the Switch, and when porting projects from Sony and Microsoft consoles. It is quite possible that DLSS will not be able to be disabled in many games.
Recall that many of the latest rumors and leaks suggest that Switch 2 will also support DLSS 3 with frame generation, and then the lack of GPU performance in most cases will not be a problem.
True, there are many players who are categorically against any upscalers, and Switch 2 may not be suitable for them.