LiveView in Phoenix is a similar experience, and I enjoyed (briefly) using it. https://pragmaticstudio.com/ has a good introduction.

Thanks! I took their Ruby and Rails courses and loved it. Great teachers!

I've done web dev with various other frameworks: Django, React (front-end only - no SSR), Vue, CherryPy, and a few others. Blazor is the only technology that allows me to use 1 programming language outside of HTML / CSS. You have component UI libraries like React does, so you have to think less about hand crafting HTML and can focus on per component logic / UI much like when developing with React or any "SPA Framework" out there.

You should try it out; microsoft makes good contributions to open source software, and C# is, in my view, the best (or maybe the only good) backend language put there