Surely some tools have to be more important than others tho and not knowing some tools impacts some jobs less. Is git a saw for woodworking? Or is it a tool chest that has a drawer for a saw? If you need to use a thousand different tools, the tool chest becomes more important (the analogy doesn't map well there but it seems similar to working on a bunch of repos that have a bunch of branches or one repo with one branch). If you only need a handful, it seems like it would impact your job less.