I agree with you, but in the cases where it really matters you can still avoid it! There is community activity around code generation to fill in for the cases where generics would really be the right answer. Basically, you make a template and render it for your type, check that into source control, and use as normal.

This removes the dynamic overhead at the cost of having to run a code generator and maintain a rendered template library in your source. There's actually language support for hooking into these generators at build time.