I think people just confuse Agile the manifesto and various methodologies that claim to adhere to it. You can work in a way that meets the manifesto without any

I think people just confuse Agile the manifesto and various methodologies that claim to adhere to it. You can work in a way that meets the manifesto without any of those concepts that are tied to it through things like Scrum. Most “no true agile” posts are really “no true scrum” because the issue is firmly in process and methodology rather than underlying principles. In fact I’d say Scrum itself whilst designed to meet the principles doesn’t actually do so in practice.