I am brand new to it but it has blown me away. I can have my front end ionic stuff and backend functions in the same repo. I have so far only done PWA but can technically deploy do ios and Android from same code. npm at my disposal everywhere. I used to be a bit anti JavaScript/typescript stacks at all costs but there is something to this.
Also when you think from a 1 man operation, I don't need to think about scaling, certs, auth (much), etc. It's common enough I can hire a freelancer to work on a new feature.
I do miss though the raw simplicity of bottlepy, cork and jinja2 templates which was my old stack.