I've never heard this. Heat is easy to get. You go out there, talk smack about the local sports team, trash the current face de jour, interrupt a face promo, thrown in a cheap shot, and have them program you a streak of wins you don't deserve.
Everything except talking smack about the local sports team. I don't like when they do this because the heel should be generating heat from the nationwide audience, not just the 20,000 in the stands. When The Miz ripped Lonzo Ball and his family a new one in front of the LA crowd, the rest of the country was cheering that.
IMO the biggest problem in WWE now is they don't treat it like a sport. Creative is too short-sighted.
The titles have become just props. They still add the tag ropes but wrestlers never use them, just slapping each other on the back or other body part to jump in. They aren't even allowed to use the word wrestler anymore. They are superstars or "sports entertainers." They are wasting a huge opportunity with the brand split. They should create storylines where wrestlers are traded or become free agents and the brands do everything they can to sign them. Just last week when Daniel Bryan fired KO and Sami, they should just be like, whatever, Raw's GM has been blowing up our phone, which would create a more legit storyline as to why they hadn't been fired before even after all their meddling. Shane leads an attack on Raw, beating up camera and sound engineers for no reason just because it's Survivor Series. If the women aren't wrestling for the title, they are thrown together into meaningless multi-team tag matches.
Gone are the days when the Hogan-Savage Wrestlemania main event or the HHH-Angle main event were built up a year in advance through clever writing.