2020-07-10 UTC
# 
Zegnat HTML spec is fairly specific about the fact that the disabled flag is always set to its default value when a <style> element is parsed. Nothing about setting it, sadly. It does not even seem to exist in the DOM definition of the element, only exists in the CSSOM definition of Stylesheet. So it is very easy to set with JavaScript, but that is of course *after* the browser has already done the initial parse.