Long answer: https://2024.stateofjs.com/en-US/libraries/#tools_arrows
It shares a space with React and Vue in terms of positive opinions. Opinions are worse since v5 due to the perceived increase in complexity of using the Runes system.
It is the fourth most used JS framework behind React, Vue, and Angular.
The main issue I had with Svelte was building real full-stack applications, where Sveltekit itself certainly felt behind its peers, but that's unrelated to runes/signals.
It's certainly not a rare viewpoint, just click on any link about "svelte runes" to see people upset.
- https://www.reddit.com/r/sveltejs/comments/1crpj0r/svelte_5_... - https://www.reddit.com/r/sveltejs/comments/1htup7k/ive_been_...
You do raise a good point that LLMs make React much easier to adopt these days. Again, in my case the switch happened before I found LLMs effective for the sort of work I was doing, (but now it's a no-brainer to default to react).