Earlier quoted context omitted.
I always read "learn" in this context as "be familiar enough with the basic language properties that I can pick the rest up on the job, get things done, and not be too dangerous, or annoying in code review" and when I read it that way I agree. Some of the best devs I have hired had no prior experience in the stack. I'm not hiring for Python or C#, I am hiring a software engineer and the skills I value are all transfe…
What about your tech leads who are looking for top of market salary? By top of market, I mean within your hiring pool not senior staff principal engineer level at a hedge fund
The language or stack is irrelevant.
A good lead knows the right questions to ask, understands they don't have all the answers and plays to their own and the teams strength.
Honestly the last thing I care about, especially here, is if they know the stack.