The 'Sleepwalker' singer expressed his confusion as to why some are more willing to "celebrate" outspoken female singers than gay male stars.
"As a community, we're a little bit resistant to a gay male popstar ourselves," Lambert explained to Instinct. "It's very easy for people to look at my origin, which is American Idol, and automatically assume that I'm a commercial sellout or a puppet or a flash in the pan. I don't think I'm any of those things."
He further explained: "There's something weird there. We're very eager to celebrate a strong female. But to celebrate a fellow gay man - it gets catty sometimes."
Lambert also discussed the musical diversity of his album Trespassing, which topped the US album chart earlier this month.
"This is the kind of music I listen to," the star said. "I know the style of vocal I have is kind of big. It has a certain edge to it. I've always loved rock, but I also love stuff that is more groove-based, more funky, more soulful, more dance music."
Trespassing is now available in the US and is released on July 2 in the UK.
Lambert recently announced that he will be fronting Queen for three London concerts in July.
Watch Adam Lambert's 'Sleepwalker' music video below: