I heard similar grumbles from Hyundai dealers around San Jose, CA, re: the Ioniq 5, and that model got a lot of accolades and is frequently recommended as an alternative to the Tesla Model Y for its category. I'm not sure what's going on is strictly a legacy model desirability issue.
It might be a "legacy dealers can't sell even good EVs because they don't know enough about them" issue though. Really hard to say, but that definitely would match my personal experience talking to a number of them.