To clarify, "general stream" is another term/topic that I am self-coining to understand OSM.

Basically, it's the "every day mapping". Casual user clicks at e.g. StreetComplete. New building; draw it and done. Position slightly off; move it and done. It may not be fully correct but for most purposes it is passable. eg the exact coordinates may be a bit off, but map-matching / navigation won't notice it.

These are the kind of situation where the changeset can be made in e.g. < 5 mins. Other situations may require escalation into e.g. OSM Notes because e.g. the way forward is not obvious. eg ancient note at the TST Space Museum trying to see what kind of museum it is.

Specific to this note, if the note wants a roundabout, then we now have a roundabout. At minimum, whether the roundabout is too big / small seems like can be given to near future because map-matching won't notice it, and some time later we are expecting newer aerial imagery anyway and then it is doable by anybody very quickly / easily.