React in itself isn't that heavy, and things like preact exists if you want an even lighter library, it's mostly other dependencies that are heavy, so the blame is mostly on the side of the devs, not react, for having heavy and clunky software.
Good thing that 99% websites don't need to modify 1k dom elements every seconds then, if you do using a DOM library isn't the right choice.
My comment was about size library, in response to the parent comment about MBs of js.
I'd gladly take a 10ms slower update on 1k rows(that practically never happens, ever heard of virtual lists?) for a maintainable codebase any day.
