It's really a company/team culture thing. Either you end up grouped together with people who always chase the latest fads and cargocult their way to their promotions, or you end up with the "Justify everything" camp where anything new is shit on.
Ideally, you end up in a company/team that sits somewhere in the middle, faithfully evaluating the trade-offs of everything, and don't spend 60% of their time reading the latest news from blogs and social media.
Right. Anything other than the most popular way of doing things is "wrong" to them. That's how mistakes get established. This non-questioning attitude seems especially true among frontend developers.