What’s going on with the new Nintendo Switch?

Nintendo have announced an updated version of their Switch console and from what I can see, the reaction on Twitter has been largely negative:

https://twitter.com/i/topics/856739783577554949?s=12

https://twitter.com/realyoutubekids/status/1412408671754149902?s=2

What makes this update disappointing to so many people? Is it existing Switch owners or people looking to buy the console for the first time who are mad?