Sure, experience matters and some technologies get over-hyped. I was referring to the more specific case of dismissing a technology solely because it is a rehash or has failed in the past. For example, dismissing Docker because of LXC or FreeBSD jails. Or dismissing Node.js because it uses cooperative multitasking. Or dismissing SaaS because the "thin client model was tried and failed" (yes, just a decade ago, SaaS was considered over-hyped).