I think the problem Svelte is having in this area is folks looks at it the same way they look at React, Angular and Vue. All those frameworks (especially React and Angular) have their own way of doing things, so you have to know "HTML, CSS, JS and React/Angular".

I think folks think that Svelte is the same way, while it does have it's own special sauce, it's nothing compared to React/Angular. Like others have said, when hiring for Svelte, you don't really need the candidate to have Svelte experience.