I absolutely stereotype people if they drive a particular type of car or use a specific brand. Yes, I do judge them. And they judge me, too. When people judge me for
not driving a particular type of car or using their favorite brand of ___, I'm ok with that.
Take my neighbor, for example. She doesn't understand why everybody doesn't drive large American-made SUVs (think Ford Expedition sized). She thinks those are the only safest cars to drive. She's questioned me passionately about it in the past. She thinks MY choices in cars is dumb.
I think that her being so pushy about what kind of car
I drive is rude and over the top. She's a Ford Expedition/Cadillac Escalade evangelist. She's judging me. I'm judging her. We've mutually agreed to leave each other alone about car choices. Her opinion of my car choices is none of my business. Just like MY opinion of HER car choices is really none of her business either.
My sister has a good friend who owns a Tesla. He's passionately in love with his Tesla. Is a Tesla evangelist, loves the company, thinks that Elon Musk is going to save the world. Meanwhile, my sister thinks that she'd rather be caught dead driving a Tesla, doesn't want to put any $$ into Elon Musk's pocket for many reasons, and can't stand how many times in CA & AZ she's almost gotten into an accident because of how a Tesla is driving on the road. Her Tesla friend had his car broken into last year in SF...it took Tesla over 3 months to repair it. So putting aside the software updates for safety recalls, I don't know about the rest of you, but in my household, being without use of a vehicle for over 3 months would never work for us.
Or how about the Disney brand? I've been judged by others who say, "Oh, you're going on a Disney trip
again? Don't you ever get tired of that?" Are they judging me? 100% yes. I don't care. We keep going because we have a great time. Just like people who always go on beach vacations or cruises or whatever keep going because they have a great time on THOSE trips.
Or my new favorite: 2 story lifted trucks who have after-market horns that sound like a train horn. A lot of them drive like bats out of hell. I hate those horns. I think the people who drive those trucks like that are total buttholes. And yeah, I judge them. And I'm not sorry about it.

Does that mean that ALL 2-story lifted trucks with train horns are driven by buttholes? Of course not. But if you walk like a duck, act like a duck and talk like a duck, I'll call it a duck.