Welcome to the community Matthias!
Nice to see the people who respect Classical texts.
While many classical scholars disagree with the meditation methods you have mentioned, they disagree with the ‘light of wisdom’ of Pa-auk method as well.
They believe the mistakes of the methods happened due to their proportion of deviation from the texts.
I heard they respect Pa-auk in terms of Pa-auk’s prevalent respect towards classical texts, vinaya and samadhi, but they don’t accept the ‘light of wisdom’ and ‘seeing past lives by vipassana’ done by Pa-auk, saying that it is also out of the book.
You can see one of their arguements here: Impermanence of rupa - #13 by ekocare