Its is actually sad just looking from a hardware endpoint. A 2016 iPhone 7 has an advanced 5 nanometer CPU. That is really powerful when looking at the grand scheme of things. Yet most react "websites" will completely obliterate it and make the phone get blazingly hot. I do this for fun a lot when browsing the web: when a website makes my phone literally melt, I check its stack on my PC and sure enough it is almost always React paired up with Redux. These performance apologetics are sad.