I think the demand for staff has lowered standards considerably.
I was going to start a grilled cheese van!
Teach SQL a spoonful at a time then, I suppose. Do not start from having the students to read Codd's original papers.
OTOH SQL is not the best language: it's both too wordy and too terse, it's not composable in many important cases, it does not map nicely to set-theoretic operations. But a transpiler to SQL that would offer a vastly better experience is yet to take the world by storm.
I was thinking of this quote about regex, apt in this situation:
"A programmer had a problem with Sql. So he thought of using an ORM. Now he has two problems"
Choose your battles wisely
One huge problem is that learning SQL will take you nowhere, unless your schema consists of a few tables with a handful of rows at most.
There is no standard SQL, and there is no serious application development without having to delve into the sanctum sanctorum of your database vendor.
SQL is not going to go away. It's relatively easy to learn.