I wouldn't even call that "boomer brand loyalty" I'm 24, almost 25 and I will probably not buy anything that isn't a Toyota/Lexus for the rest of my life.
Toyota/Lexus are hands down the least maintenance heavy vehicles on the road. They know how to make an absolutely bulletproof reliable modern engine.
I'm a Service Writer for a mom and pop auto shop, and the most major thing I've had to write for a Toyota is... A Water Pump, Fuel Pump and a full Tuneup with 4 plugs and 4 coils. Which is... Basically peanuts compared to what I have to write for Dodges, Nissans, and Chevys. (Oil Filter Housings for Dodge, Whole Transmissions for Nissan, and a bunch of random shiz for Chevy)