See, I just straight-up don't understand this viewpoint.
Why is making them gay "dumb and artificial", but making them straight isn't? *By various measures, 5-10% of the population are LGBT. *In a cast-centric game like the ME or DA games, not having gay characters is what would be odd.
None of those characters were including to pander. *It's not like Sera or Dorian were just there to "be gay and stuff", in DA:I. *If you didn't pursue a romance or push them in their conversation options, you might never even notice. *Dorian's being Tevinter is WAY more relevant to the story, and Sera's Red Jenny friends are her reason for being part of the gang.
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From what I know, it basically boils down to stuff like "unlocking areas with points is weird and artificial", "level-restrictions are MMO garbage", and so forth. *Basically, people are angry that the game wasn't what they thought it should be, based on a metric that exists only in their own heads.