I believe that once upon a time, there was Physics Education Technology. Now there is PhET.
TPT. The initialism had been in common use for years, and the company's leaning into it.
The rebranding is not universally welcome in the physics teaching community. The American Association of Physics Teachers' official journal, The Physics Teacher, has been published since 1963, and is often referred to as TPT.
I do not foresee either institution changing their practices out of deference to the other. We've survived multiple meanings for ATM, CD, CRT, EMT, etc.. We'll power through this duplication.