It's semi-reasonable. The individual parts are reasonable but putting it together to create a branded methodology™ which is "my way or the highway" was the beginning of the agile-industrial complex as we know it.
You might make the case that Kent Back has actually put together two lines of code and run a compiler (even started JUnit) and the thousands of imitators who talk just like Kent Beck haven't, but if you're going to be critical of the agile-industrial complex you have to be critical of the founder too, who created a toxic style of discourse and a piratical business model of agile consulting.
The agile-industrial complex came from Scrum and its certified trainers, and its imitators such as SaFE, not Kent Beck and XP. Kent disappeared for a while to raise goats in Oregon, then worked for Facebook and other companies (as an employee). He’s the last person you should be blaming for what Agile’s become.
You might make the case that Kent Back has actually put together two lines of code and run a compiler (even started JUnit) and the thousands of imitators who talk just like Kent Beck haven't, but if you're going to be critical of the agile-industrial complex you have to be critical of the founder too, who created a toxic style of discourse and a piratical business model of agile consulting.