Well, for one thing, they’re very unhealthy.
Also, hot dogs are usually associated with very casual fare, which I don’t think is optimal for Shabbos (although it’s certainly not assur, and eating them on Shabbos certainly doesn’t make one a rasha).
As part of a cholent, agav (BTW), I don’t think it has that casual, “chol” connotation.
Anyhow, I think I’m allowed to hope that others share my sensitivities, while respecting them even if they don’t. (This was actually the point I’d hoped to bring out with my trollish comment).