Isn't it just the same reason linux gaming is ignored? People who have disabled JS intentionally are likely to be a tiny minority of security conscious users,

Isn't it just the same reason linux gaming is ignored? People who have disabled JS intentionally are likely to be a tiny minority of security conscious users, yet, if your business is an almost 100% JS rendered webapp, why would you go through the cost of maintaining an html/css-only version? This is of course beside the point that JS is indeed best used very carefully imho and I'd prefer an almost no-JS web, but the current market simply doesn't cater to the opinions of software dev types :/