Is it possible to use dynamic controller name in routing?

Hello,

Just registered to comment on this post because I am having the exact same issue, on a website I am migrating from v3 to v4.

Making routes with dynamic controller names was possible on v3, so this is clearly a regression on the v4.
So if I want to keep my URL architecture and stay on CI, I have to create a route for EVERY page on my website... this is possible but quite dirty in my opinion.