Agile, as practiced in many large organizations with whom it is fading in popularity is practiced in the form of 'Scaled Agile Framework' - https://scaledagile.com/what-is-safe/
It takes all of the flexibility and tenants of agile development, and destroys them to make things 'ok' for people used to traditional waterfall planning methods, but keeps some of the 'ceremony' around agile so people feel like they're 'doing the thing'.