I try to focus on the issues rather than individuals, but the root of the problems in the listed eslint plugin libraries points to ljharb.
If you do some simple digging into these libraries, you will find that these types of commits are quite common within them.
https://github.com/jsx-eslint/eslint-plugin-react/commit/e1d...
https://github.com/jsx-eslint/jsx-ast-utils/commit/bad51d062...
https://github.com/jsx-eslint/eslint-plugin-jsx-a11y/commit/...
He would rather see the download count of these polyfill libraries https://github.com/ljharb/ljharb#projects-i-maintain increase, compared to assessing the health of the JavaScript ecosystem.