Agile has plenty of good ideas.

The problem is the almost religious following and, as you mention, the whole industry that has sprung up around it.

Even the initiators said that it was supposed to be a rough framework, to be adapted to your individual circumstances and teams. It was also a (much needed) counterpoint to the then prevalent waterfall model.

Now we have consultants, people strictly following something they read in a book or learned in a course, adhering to strict structure of meetings/processes, and even a big association with a single software product, Jira. ("You are doing it wrong!")

When you step back, a lot of the ideas make sense, and many teams will even implement similar workflows without having ever heard about "Agile".

Common sense has to prevail though.