I have managed to avoid them in my 20 years in industry. I once interviewed and they wanted me to do a take home coding exercise to build a CI/CD system in Pyth

I have managed to avoid them in my 20 years in industry. I once interviewed and they wanted me to do a take home coding exercise to build a CI/CD system in Python (with a scheduler). No one does that - we use GitLab, Bamboo, Jenkins, etc. Not a LeetCode example but my point is the coding exercises are silly. (Plus Activision was apparently using Perforce at the time and not git)