Because we’re still dealing with it everyday. I can’t even count the number of basic trainings I’ve gone through and then seen everything they preach go directly out the window

As many pointed out, unfortunately most businesses employing 'agile' don't seem to be 'agile' at all from management side, so we still have all sorts of broken practices used industry wide which are absolutely idiotic.

I'm working with a team that the PM follows Agile like its a silver bullet solution but is obviously terribly flawed.

Because many companies are still transitioning to the realization that software is a core part of their business even if their product is physical.

it's fully mainstream. my company (mid sized tech company far from any coast) is adopting it for everyone right now.