At the same time the industry is chugging along fine despite his bad advice. Despite his attitude against type checking we're gladly moving from JavaScript to Typescript and despite his attitude against better tooling we're gradually dropping C++ for Rust. Engineering projects that needed inscrutable correctness have proceeded to use TLA+ to great success.

Uncle Bob has influenced me during my career, but I don't nor do I know any other senior developer who preaches his gospel. Most people just pick up the bits and pieces they like and forget about the rest.

Maybe you'll get some juniors who get overly zealous but I think there's worse things a junior could be doing than following Bob a little too strictly.

Ruby has long been my favorite programming language and I used to believe that the static typing of languages like Java were the main reason they were so much less effective. After having worked with Typescript for a couple years and seeing the magic the Rust community is pulling off I now believe we'd benefit from static types in Ruby, as do an increasing amount of Rubyists.

The true danger is getting stuck in your ideas, and ignoring the wisdom that's being developed around you.