#1 might be true today, but it was definitely not when react was new. I made a fairly simple react site that worked great on my workstation, and then I tried u

#1 might be true today, but it was definitely not when react was new. I made a fairly simple react site that worked great on my workstation, and then I tried using it on my Android phone and it was unusably slow. Mobile phones have gotten faster, and so have mobile js improvements, so I wouldn't be surprised if it's negligible overhead these days.