I think many times people criticize new-ish web technologies because they don't want to spend time learning it (which can be okay). They hope to sway others awa

I think many times people criticize new-ish web technologies because they don't want to spend time learning it (which can be okay). They hope to sway others away so that a critical mass of users never compels them to adopt the, now necessary, tech (not that redis is 'necessary').