No, that's a different concern entirely. Nintendo could (though never will) open up Switch development to everyone while still exercising judicious control over which games are listed in their own store.
And in the meantime, there's already tons of crap shovelware on the Switch storefront. Nintendo doesn't filter for quality.
TLDR A game market flooded with shovelware crap is a disaster for everyone.
Modern day consoles intentionally add hurdles/friction/cost to publishing in order to weed out the less serious studios.