The reason for my skepticism is the delta between what they're being sold as and what they actually do. All AI solutions, including agents (especially agents!), are effectively worse-than-worthless without guidance from someone experienced. There's very little that's "autonomous" about them, in fact.
The very guy who coined the term "vibe coding" went on stage effectively saying we're putting the carriage before the horse!
Omitting the important caveat that while they are fantastic tools they need to be restrained a lot is effectively lying.