Yeah. This is bullshit. The author has a very poor understanding of agile presumably because he has only been exposed to some really bad agile practices which are common in big corporates these days.

For an alternative view of agile from the UX community, listen to this podcast with Donna Spencer from Maker X about user experience design in empowered product teams.

https://nononsenseagile.podbean.com/e/0071-donna-spencer-ux-design-in-empowered-product-teams/

and some others with Jeff Gothelf

https://nononsenseagile.podbean.com/e/0062-jeff-gothelf-lean-ux-and-sense-and-respond/

and Christian Crumlish

https://nononsenseagile.podbean.com/e/060-christian-crumlish-the-intersection-between-ux-design-and-product-management/