How many developers selected hardware, configured hardware, burnt it in, racked and cabled it, entered it into a company insurance roster, made and maintained the interfaces and documented it?

This _was_ SA 101 and is the part you ignore. Hell even in 2007 if you didn't know hardware you were unemployable as an SA. What do devs writing json-rpc interfaces to monolith 1212 running oracle X as backend care about infra?

This is the sea change and not everybody agrees with it. You have a 'cloudy' perspective.