It's PR ********. It's just about the RAM - 8GB minimum. There are so many recent researches, that proves A17 Pro NPU is not much faster than previous year. 35 TOPS, but measured in INT8. A16, A15 ects are measured in FP16. So basically A17 Pro is 17.5 TOPS in FP16 vs A16's 17.
Also the "poor" M1 is just A14 with 2 more P cores. It's using the same old 11 TOPS NPU, but sure... no problem to run AI.
This channel is researching the topic deeply btw. It's in french mostly, so you have to use the translator.