React is not a replacement for jQuery. I've seen many codebases that are written in React, but still include jQuery for some legacy function in the app that references $.param or similar. Using this stat to say anything other than "jQuery is bundled on X% of sites" is pointless.

If you could determine which sites are built using jQuery as the primary "framework", that would be informative. But even then, jQuery is just a library of utility functions, comparing it to React/Angular/Vue is pointless.