I don't know about that. Obviously Switch is a good platform for indie games -- both Switch and indies are vying for the attention of "retro" gamers -- but indie developers deal with small budgets and opportunity costs. They might only be able to support PC, or iOS, or PS4.
If I was an indie developer, I'd target PC, PS4, and Switch -- in that order. If I'm more comfortable in the Nintendo ecosystem or I have a game that's similar to Nintendo games of old, I might switch (get it?) those priorities around.