I agree with your point.These tools actually good for an individual, But I don't think much suitable for large organisation or complex projects. In large complex sites many front end dev and back end dev will work together simultaneously and they use git for future upgradation.If you need to modify even a small change in the code that the tool has produced its only possible for coders and some times it may be complex too.Finally these tools are not bad and they are improving so much. Currently they are not harmful to front end dev may be in feature they may ...will...