Oh please. That ship has sailed. I'm marginally sympathetic to people who don't run JavaScript on their browsers for a variety of reasons, but they've deliberately opted out of the de facto modern web. JS is as fundamental to current design as CSS. If you turn it off, things might work, but almost no one is testing that setup, nor should they reasonably be expected to.

This has zero to do with Adtech for 99.99% of uses, either. Web devs like to write TypeScript and React because that's a very pleasant tech stack for writing web apps, and it's not worth the effort for them to support a deliberately hamstrung browser for < 0.1% of users (according to a recent Google report).

See also: feel free to disable PNG rendering, but I'm not going to lift a finger to convert everything to GIFs.