Throwing this in the mix since a CTRL+F search didn't bring up the word "indigenous".
I have heard a lot of push back against the permaculture movement because of many prominent permaculture people
advertising techniques without citing their origins in Traditional Ecological Knowledge.
From the beginning permaculture is bad at properly citing things, I think by design, which is why it's gotten flack from academics who otherwise appreciate its ideas. The 'last
straw' for many I know is the fact that ideas are advertised as permaculture ideas when really they are repackaged
indigenous techniques. This is not true across the board, many permaculture people do acknowledge indigenous sources and stewards but too few.
Thing is, permaculture is a bit of anarchy, it's whatever someone decides to call it and it sounds most like whoever speaks loudest about it. Good to stay flexible about opinions I think.