Since businesses are the ones who employ software developers, 'Agile' is the only Agile that matters because that's the definition the people who pay money use.

We can talk all day about principle philosophical differences and what is/isn't 'agile,' but there has been a consensus from businesses in industry that 'agile' is 'Agile.'

Agile has become an excuse for terrible planning and offloading more and more work with ever increasing responsibilities to developers. At some point, enough professionals will reject following these terrible frameworks through different mechanisms. We're definitely not there yet, unfortunately.