Absolutely!
My only take is that disregarding graphics as something not important and not influencing anything or anyone is not right.
Plenty of people, me included, care for the high-quality assets in the game, and that's a big factor. Honestly, as I see it, there are two reasons open-source games don't commonly gain massive traction: they don't have the budget for massive marketing, and they don't look on par with AAA games which still attract most gamers with visuals.
The niche audiences can be served, just not your everyday gamer.