Yeah, so much simpler,

"Common IHttpClientFactory usage issues"

https://learn.microsoft.com/en-us/dotnet/core/extensions/htt...

"Guidelines for using HttpClient"

https://learn.microsoft.com/en-us/dotnet/fundamentals/networ...

And this doesn't account for all gotchas as per .NET version, than only us old timers remember to cross check.

I didn't mention IHttpClientFactory - just HttpClient. I will concede that ASP manages to be confusing quite often. As for the latter, guidelines are not requirements anymore than "RTFM" is; You can use HttpClient without reading the guidelines and be just fine.