I find SQL a very thick "wrapper masking low-level logic". Think of the query planning, the index-maintaining, the upholding of guarantees, the writing-to-disk and caching that you are all not doing by using a RDBMS!

I'd say SQL is a very high level language.

"SQL teaches you to reason and approach problems logically" -- I kind of agree here. It teaches relational data mgmt. I think it is better to attack most software design challenges at a higher level, and --once settled at that level-- consider how to "serialize" those solutions to an RDBMS (if that's the tech that you've chosen for persistence; still a very solid choice after 50+ years!).