Developers are still familiar with the concept, there are even ideas like server side rendering in react to make sites more SEO friendly.

I think the biggest issue is that there is very little business reason to support these users. Sites can be sued over a lack of accessibility and they can lose business from bad ux, so they are going to focus in those two areas ten times out of ten before focusing on noscript and lynx users. SEO might be a compelling reason to support it, but only companies that really have their house in order focus in those concerns.