There is snappy electron software out there too, to be fair. If you create a skeleton electron app it loads just fine. A perceptible delay but still quick.

The problem is when you load it and then react and all its friends, and design your software for everything to be asynchronous and develop it on a 0 latency connection over localhost with a team of 70 people where nobody is holistically considering “how long does it take from clicking the button to doing the thing I want it to do”