I wouldn’t say mostly. There’s plenty of BS around it since it’s very prone to attracting hippies, and there’s plenty of grifting around it and pseudoscience as well. But some concepts such as certain plant species working together, soil regeneration, planting pollinator-attracting plants, diversity to prevent plagues, organizing land in such a way that it’s most useful to people and more intensive the closest to them and less intensive the further it is, reusing every output as much as possible and minimising artificial inputs, working with nature and not against it… There’s plenty of valid themes in permaculture than can be used.