There's no benefit of limiting yourself to a single website, unless you really are too lazy to use more than file upload form after making an update. Highly unlikely, that it would affect your chances of getting featured or anything like that. There's also no real benefit to have unfinished game everywhere. Gamejolt can give you a bit more exposure in the beginning if you manage get to into "Hot games" competing with empty fan game project pages. Itch.io has a more flexible game page styling system and also more paying users. In both cases, you gotta promote the pages yourself, because Gamejolt discoverability is crap and in itch.io you gotta get views to be seen organically (their tag system is pretty nice, tho). Never really bothered with indiedb, since that feels like a dev-only site.
