The two places E-Prime seems handy are in CBT type things - clarifying “I’m sad” vs. “I feel sad” seems to have some benefit, and in fiction where you want to verb things up and ‘to be’ doesn’t help. But at best E-Prime is a heuristic, not an absolute standard - slavishly applying it is pointless.
The sheisters who invented NLP borrowed a heap of crap they didn’t understand and imported/threw in various name-checks of more legit. principles to give their pseudoscientific cult/scam a veneer of legitimacy, so they borrowed E-Prime. The core of NLP seems to be encouraging magical thinking to solve all your problems, though. Tony Robbins and the rest of those scamming bastards deserve to die in a fire started by one of their scammy firewalks.
