Yeah. In many cases I've had to use CTEs like this in BI tools. When you're experimenting with datasets for dashboards it's much faster to work with CTEs than to try to make production DB changes.
I agree, I'm often using CTEs to organize sub-result-sets because asking for a production database change / view change requires a ticket, and it's just way faster to iterate in a few CTEs in a single query.
If, eventually, a few CTE distillations become common enough, then yeah, that's grounds for a request to basically shove that CTE into a view so other people can use it.