Completely correct and the operative phrase here is “absurd amounts” which actually captures our entire contemporary computing stack in almost every dimension that matters.
The entire point of markup attributes is to contain rendering hints that themselves aren't rendered to the user as such. Hell, angle-bracket markup itself was introduced to unify and put a limit to syntactic proliferation. But somehow "we" arrived at creating the monstrosity that is CSS and then even to put CSS and JS into inline element content with bogus special escaping and comment parsing rules rather than into attributes and external resources.
The enormous proliferation of syntax and super-complicated layout models doesn't stop markup haters to cry wolf because entities (text macros) represent a security risk in markup however; go figure.
