Are you implying that when doing DOM reconciliation, React uses these table-specific insertRow/insertCell APIs for adding and removing elements in tables instead of the regular DOM element APIs it would use for all other elements? I would be surprised if that's the case.
The funny thing is the insertRow/insertCell API just call into DOM manipulation functions like appendChild internally, they just provide some syntactic sugar around things like managing the rows/cells array. It's all the same
https://github.com/WebKit/WebKit/blob/28fa568972a4d34d867948...