I believe much of the complexity fatigue the author described is more related to React and its woes than to frameworks and JavaScript in general. Not that JavaScript doesn't have its own set of problems.
Having worked with earlier versions of sveltekit in the past, I have to say the new reactivity system is not that bad and pretty easy to wrap your head around. Once you're used to the runes (there's like 4 you have to remember) you can just focus on building stuff and it's really quite a pleasant and productive dev experience. I've gotten multiple compliments from people about the speed and quality I was able to deliver this with and that's in large part due to sveltekit.
I do have to give a shout out to good ol' bootstrap for allowing me to build something that looks good, works on mobile and is just easy.