I'm reminded of WAP: https://www.wapforum.org/what/technical_1_0.htm (no, not the Cardi B version)

It was never terribly popular, because who wants to make two sites? Really, that plauges all such plans; everyone wants to build the fanciest, most "modern" site possible, and not do it again for a more constrained version. That's why few sites offer a JS-less version. Only AMP has made some headway, with the weight of the Google hegemon behind it.