It is not dumb question. As the dashboard is just a bunch of nodes but 1 person as maintainer it is not possible to have every corner covered in help files. But luckily there is common place for every node - the github page, where Readme covers most of basics.
Known that such idea can't be figured out by regular user but that's where the community works out best.
Using the new iconify script is ok if used as an icon button node, but no longer works in text node label.
I note the format is different with new version, but even after updating my text nodes the icons do not display.