I just have to give another option: Steamdeck.
I have 2 Pokémon, New Kirby game, animal crossing and Mario O. They all Works pretty near perfect. Some slowdowns here and there. But otherwise, like perfect. The Steamdeck is a very good option!
maybe you worries about oled chip solder issue!!, give it to good technican than to permanen solder with reball the emmc,
switch oled has better ergonomic & longer battery life than steam deck, both have difference experience, depend on you, switch is light and more enjoy playing non extensive games, like platformer and rpg, steam deck offer many things and utility, is really hard choice, and yes switch oled cfw & steam deck has similiar price
waiting more compact form factor pc handheld without lot of noise fan and hot body, is gonna couple years away, maybe 2years ahead, sadly
switch oled : good display, nice sound, light, many really good games, smaller game size, can install linux, table top mode with nice adjustable, and quite good rumble (some game like tetris connected, huntdown, ghost song, thumper, etc) has better experience on
steam deck : mediocore display similiar with v1/v2 switch, quite fan noise and quite heavy, proper more extensive games, sound amazing but trible a bit to much, offer full pc capabilities. price/performance cheaper than switch oled cfw, nice build quality, more customize than switch