I did a quick search for a couple titles and found the following:
Thomas Was Alone is
5 stars on PS4,
3.5 on Xbox One and
Overwhelmingly positive on Steam
Velocity 2X is
4 stars on PS4,
3 on Xbox One and
Positive on Steam.
Super Time Force is
4 stars on PS4,
3 on Xbox One and
Very Positive on Steam.
Shovel Knight is
5 stars on PS4,
4.5 on Xbox One and
Overwhelmingly Positive on Steam.
Based on this extremely limited set, it seems like the user reviews are generally lower for indie games on Xbox than on PS4 or Steam. That said, there are a lot of Indie games that are rated very highly (4 stars and above) on the
Xbox Store.
Some of them include Outlast (4.5), Terraria (4.5), The Escapists (4.5), The Long Dark (4.5), The Zombie Army Trilogy (4.5), Limbo (4.5), Life is Strange (4.5), Castle Crashers (4.5), Oddworld New and Tasty (4.5), Rebirth of Issac (4.5), Don't Starve (4.5), Elite Dangerous (4.0), Happy Wars (4.0), Slender the Arrival (4.0), Pinball FX 2 (4.0), among others.
Not included in that list are "indie" games like Ori and the Blind Forest (4.5), Valiant Hearts (4.5), Plants vs. Zombies Garden Warfare 1 (4.0) and 2 (4.5), State of Decay (4.5), D4 (4.0), and Child of Light (4.0), among others.
As such, I'm not sure it's fair to say that the people playing games on Xbox have poor taste or that the community doesn't like indie games because there are a bunch of indie and "indie" games that are highly regarded.