No, nothing incorrect, I'm just repeating what we were all told by some MG4 owners who were in the ZS forum about their equalisation experiences a while ago. And this was great to hear & a good exchange of info came out of it. Seems even you MG4 guys, like many ZS guys & girls, couldn't agree on what could & couldn't be done. There are so many equalisation threads with all manner of advice in all forums. But no clear "this is how you do it" advice. It seems this is because of differences between different model cars, batteries & software & quite a bit of misunderstanding by folks who don't understand or read the owners manuals. I must say my manual gives clear advice which I have ascertained does actually work. Deviation from my manual prevents an equalisation charge.The most recent incorrect sweeping statement was you saying that it seems to be the other way around (supposedly confirmed by MG tech support), i.e. NMC can only equalise at 100% and LFP at any set percentage, which is absolutely inaccurate for the MG4. This may be a correct statement for the ZS, but again, that's not helpful for MG4 owners looking for the right information.
The only thing I can recall that may have been confusing, is that some SE SR owners saw an option to set their charge percentage but this was identified as being a bug, and software updates fixed this as far as I'm aware.