You've missed the point. 90% of Rails websites behave badly every time they're deployed, and the developers don't even realize it. I included our build scripts

You've missed the point. 90% of Rails websites behave badly every time they're deployed, and the developers don't even realize it. I included our build scripts in the post to illustrate how simple it is to fix the problem. The important thing is that people reliably version their asset URIs, not what tools they use to do it.