>What I find most impressive about the DotNetAnywhere runtime is that it was developed by one person and is less that 40,000 lines of code!! For a comparison the .NET framework Garbage Collector is almost 37,000 lines.
Keeping the code base small is a double edged sword. The trouble with everything going web-based these days is that script kiddies (myself included) should have some awareness of how memory is being managed and when to worry about holding IEnumerables in memory. Your write-up here is interesting and it's the first I've heard of Blazor. This is all very fascinating you have me reading the codebase now.
At least in the simple tests I did it behaved as expected, but I know that testing a GC for correctness is not a simple task!!