Has anyone actually ever seen evidence of SOLID principles being 100% adhered to, as opposed to people just saying they're using them correctly then you look at their code and they're clearly not.

I can count more than one responsibility here...

I don't think they're very measureable, nor do I know of any evidence that using them will make your code any better, imo they are just guidelines that sound sensible and are to be used as long as they still sound sensible in the cobtext you're implementing ..

e.g. how would you measure a single responsibility? is it "a data repository" or "accounts repository" or "accounts querying" etc.