I'm writing a WordPress theme. In it, I make liberal use of custom properties. I don't want to completely leave IE users in the cold, so as part of...
For further actions, you may consider blocking this person and/or reporting abuse
You probably found an answer by now, but let me add some options for you.
Maybe you can achieve the desired effect with html conditionals!? I wrote a article about these and other enqueue options here: vanaf1979.nl/wordpress-css-styles-... (Scroll down to "Adding Conditional stylesheets:")
As for your first option... You're right that you can't enqueue noscripts, but adding these to the head is actually pretty simple. I have created a little Gist for you with a implementation of your noscript here: gist.github.com/vanaf1979/b6f5d57d...
Or maybe you can just restructure your Css and implement some progressive enhancements using @support. Check out this article: dev.to/lampewebdev/css-quickies-su...
Hope this helps...
I'm curious what your final solution is, so please share. ;)
Thanks