I just noticed it said specific games. Forgot about that.
Still probably worth it for Nier Automata.
You can use boost-mode with any non-pro game, it's just you won't notice improved framerate if it never drops below 30/60 or whatever it's framerate cap is. You also won't notice improved resolutions in games that don't use dynamic resolution.
You'll get marinally improved load times in pretty much every game with boost-mode on though.
Predictions (Made July 2019)
LTD: PS4 - 130m, Switch - 110m, XBO - 52m 2019 : PS4 - 15m, Switch - 18.8m, XBO - 4.8m 2020: Switch - 22m (Peak Year)
Switch lite really screwed up my Switch prediction this year! Looks like it's going to be about 19.5m-20m for the Switch in 2019, 14.3m for PS4.