Is it bad though? The problem with Leetcode is that it's an extremely unrealistic test. This on the other hand seems like it actually tests real-world scenarios

Is it bad though? The problem with Leetcode is that it's an extremely unrealistic test. This on the other hand seems like it actually tests real-world scenarios, and you can get there without grinding. I'm pretty sure I can pass all the tests they've currently got despite having no formal sysadmin experience, just using common developer knowledge, common sense and strategic Google-fu.