The problem is the job market isn’t there yet. That’s what drives React, that and many people already know it and don’t want to change

It was. Now it is more of the same as React and Vue. Solidjs and Lit (my preference) are real interesting alternatives.

Depends on why do you want to learn it? Career enhancement - may be no, go for established framework to get better job. For a part time project - may be yes, it's easier to learn and performs better.

Learning after react will give you better idea about complexities and problem statements both the framework solves.

Yes in that the learning curve is easier, no in that it's JS wrapped in a domain-specific format and not as "vanilla" as a plain React SPA.

I would try making a small app in React first, and then moving to Svelte to get an idea of why Svelte was made in the first place.

I mean there are pros and cons of each. Why svelte over solidjs for example? It depends on your usecase. React for all it's flaws is the most widely used... so if people are aiming for a job it is still the best bet.