It's almost a year since I started actively being on here and my observations so far:
It is actually very opaque to most people how different Fedi software using ActivityPub actually interact with each other
You might think you know what other people on other software see/do but you probably don't! Unless you have an account on other instances using other softwares and actually test things out!
Also, this has massive implications on Fedi safety, if that is something you are actively working on.
(terminology might be wrong: I just did a very quick lookup of it)
