Earlier quoted context omitted.
> Pages don't need a fallback to non-Javascript in 2019. Strongly disagree. Having your page completely break instead of degrading gracefully puts up a barrier to those who cannot run JavaScript (for example, users with older, weaker computers).
People on "older, weaker computers" are likely running a browser we also don't support ( It is unlikely that there exists a subset of users with a modern enough computer to even hit our web servers that is under-powered to the point of not handling JavaScript. Our analytics definitely don't show this.
Does your analytics correctly register hits from clients that doesn't support Javascript (I'm thinking about survivorship bias).