I've been in ticket sales for about a year (my Traditions was a year ago tomorrow!) and it's been the same since I was trained. Several of my coworkers have been around much longer and don't remember that advice ever being true. Price bridging is performed differently at resorts because they've got a different computer software, perhaps it was true there at some point, I don't know.
Price bridging is an afterthought in Core training and gets addressed for about five minutes on the third or fourth day (out of five). It's an incredibly simple procedure. If you see a ticket with "alphabet soup" (TC, IA, LR, etc) after the ticket type, that generally designates a 'net rate' ticket and you do a 'quick upgrade' function to bring it to gate price before doing the actual upgrade. There are a few circumstances where it's a little more complex but they're rare. We have a ticketing documentation website available to us through our workstation computers with more information than anyone could ever memorize, and that's what we're supposed to reference, but most people just call a coordinator for anything out of left field.