react compiler breaking mobx is purely spa; progressively stricter rules of hooks too. Its bad.
On an aside, SolidJS has been taking a huge momentum hit recently, I think the drop in downloads is a lagging indicator. It's not an easy space, I love SolidJS and recognize that Ryan Carniato likely took a career hit to work on Solid, but my bet is that Solid will fail to catch critical mass. Really sad as I love the Solid experience.