I didn’t really consider 2D indie games. For 3D indie games, some games are cut down while others are “good enough” to the average Switch end user.
At the end of the day, if the ability to play 3D games from about 5-10 years ago in 30-60fps sounds like a dream to you and you are willing to jump through some Launch Properties/Proton version hoops for some games in order to get that perfect gameplay (for example, I have GTA 3/Vice City/San Andreas OG games, and I spent days modding the games on the SD to get it running close to flawlessly as possible) rather than settle for compromised ports - which for the average person playing video games, they wouldn’t care too much about framerates or graphical fidelity as so much as the convenience to push Play and just go), then Steam Deck is for you.
Otherwise, Switch is perhaps preferrable. OR, if you care more about visual fidelity more than anything, maybe consider getting a PS5/XSX. I say this as I do love my Steam Deck for GTA5 sessions, but for RE games I often go to my XSX.