Tbh, I’ve never understood the appeal of server side blazor. High latency is too risky and you may never know that your clients are experiencing it. This hybrid approach in .net 8 is interesting but for a business app, initial load time is a once off thing and only a few seconds anyway. Kind of like an installer in a way.
I have a few criticisms though. I work almost exclusively on Linux now and it was extremely painful to try get an old .net project up and running because Microsoft aggressively sunset old .net versions. 4 years is not that long ago and I didn’t want to go through the pain of upgrading to the latest to make a few minor changes. So I had to dust off an old pc and use that. I understand that the .net core era was a turbulent time for change so maybe that’s why. But dammit, at least leave the old SDK’s up for a decade for this very reason!
Ironically, the slowest part of the system is the hosted sql server instance that is prohibitively expensive to run at a half decent speed with laughably low volumes of data. What a captured market that is when you can simply spin up a free PostgreSQL instance on the same vm and be done with it.
Anyway, to answer your question. Yes, it can be used in production. This one has 3 production instances and is used by about 30 people on a daily basis.