Kevin Durant is fed up with how hoop fans are treating Russell Westbrook ... saying it's completely fair to criticize players for poor performances -- but people are taking it to an unnecessary level with his old teammate.
You've seen the memes and clips -- Brodie's game has been under the microscope ever since he played his first game for the Lakers in 2021 ... with folks highlighting his miscues on social media and cracking jokes.
KD -- who played alongside Russ in Oklahoma City -- says he's seen all the posts and is clearly annoyed with how the 2017 MVP is being treated ... and thinks NBA fandom is getting to "toxic" levels.
"I understand there's certain points where you don't play well," KD said on "The Etcs" with Boardroom. "And, you are open to criticism when you don't play well. We get that."
"But, it's like now, you make him the butt of your jokes now. It's going to a point to where it's like, alright, I get the criticism for what he did that night, but now it's starting to reach a different level of some s*** that I don't understand right now."
Durant says fans are being extra hard on Westbrook because he's now on a huge market team and playing alongside the most famous NBA player in the past 30 years ... which has a big impact on how he's evaluated.
Despite all the talk, KD is pulling for Brodie ... saying he hopes he sticks to his game, blocks out the haters, and proves everybody wrong -- with one exception.
"When we play [the Lakers], I hope they play s****y," he joked.
Durant adds he thinks current NBA fans are overall being more negative than usual ... saying, "I hate how they talk. The dialogue around our game is so toxic at this point. I get criticism, but it's starting to turn into something else right now."
Speaking of KD, the superstar just became the next big NBAer to become an owner of a Major League Pickleball team ... adding to his growing list of business ventures off the court.