Additional factors I'd want to add:

Confirmation bias (where you've spent some time on k8s or whatever, and now you just want to cash in on your time loss, objective criteria be damned)

Generational churn (where you find yourself in a field where everything has been said and done, and you just need a new buzzword on your resume to start over; this goes hand-in-hand with corporate IT longing for fresh and cheap staff and their stack in need to look sexy)

Big media (where extremely large infrastructure runs on k8s or whatever, and gets disproportional airtime, because cloud providers want to sell you lots of pods, and people not checking whether the proposed arch is a good fit)