@thomasfuchs @mos_8502 I was going to post earlier figuring that this is what you're talking about, but decided to wait so as not to try put words in your mouth.
That problem is inherent to Fedi, and not specific to microinstances... if anything being by yourself makes you more aware and more likely to look at the originating server to check replies before you pile on.
There's also things like fedifetcher which helps in a very clumsy way, in certain circumstances.