I'm kind of on the fence on this one. I remember the Wii had a much higher entry barrier but iirc still a lot of shovelware. A high number of games makes discoverability harder for "serious" developers (people who don't produce asset flips etc.) On the other hand I don't think this problem should be solved by creating an artificial entry barrier.
the reason the wii got all that garbage was because the console was such a runaway hit with the casual market that publishers rushed out to get whatever crap they could onto it. a $500 devkit doesn't have any effect on those forces. the switch probably won't be the runaway hit with the casual market, so publishers probably won't rush out to get whatever crap they can onto it.
