What tools do you use for command line editing?
Video editing is a very visual workflow, you need to see your result at all times, instantly, to be effective in your daily job.
Working with a CLI is rather counter intuitive and makes it hard to make creative decisions.

Frameworks like these are great to make programs on top of them and to automate video processing but are tedious to use in standard video production and animation workflows.
It's a matter of what you want to do, not whether its a powerful tool or not.