There were a few, but none worked reliably at all. I do use a external service that converts twitter to RSS (something they dropped a while back), but also have to redo those every year or so as the various services break or stop functioning.

The thing about RSS is that it is a good match for providing a feed. By Google not providing that sort of thing, you have to use their user interface. Others can't try experiments, cater to certain usage styles, or introduce new ways of using the service. You'll note that twitter had that vibrant experimentation and growth, until they decided to cut that possibility in 2011 - http://fortune.com/2015/10/21/twitter-jack-dorsey-apology/

A service like this will always be a band aid solution. You are at the mercy of the provider of the source data, and they can easily screw you up (as you have pointed out.)