Your anecdotes are interesting, but they don't present anything substantiative with regards to this discussion that merits this spittle-flecking you're trotting out here. Nobody's telling you to not do as you feel is right, at least not around here--what you describe isn't happening in this thread. You're being strangely aggressive and hostile just at the idea of using a relational data store to store relational data and I have no idea why.
As far as devops go, the lack of a solid term is why I use the term "platform engineering" for what I do. I build things to make other developers more productive and systems more responsive and scalable.
Wait a minute. Cult of Codd is proclaiming that everything is relational and everyone should always use RDMBS, and if they don't, they're doing it wrong and wasting their time. OP went even further with claims that RDBMSes cover pretty much everything in the CS. If it's not an aggressive cult, I don't know what else could be more aggressive.
I'm ok with using RDBMS for storing relational data, everything has its niche and every tool could be used efficiently when needed. What I'm not ok with is when cultists try to force everyone else to use their precious hammer everywhere, for every little nail. I'm not ok when I'm told that if I did not use RDBMSes I did not do any large scale data analysis.
As far as devops go, the lack of a solid term is why I use the term "platform engineering" for what I do. I build things to make other developers more productive and systems more responsive and scalable.