Its true though. How many times have you seen long range models show cold only to modify as it gets closer ? No reason why the reverse cant happen when it shows warmth in the long range.
You should know by now, warmth is normally forecasted well, if you see signs of ridging in the SE/warmth in the SE in the extended, its way more likely than cold, when you see cold in the models at long range, it normally modifies, for example the cold bias @GaWx mentions often is a good example, and there’s support for heat in the extended