Everything you've stated here is 100% accurate. A lot of the best stuff from history came from outsiders, nobody knew about it until the artist died, and much of the work took on a whole new meaning over time.
Digital art is a great way to pass the time. There's a lot to learn though, but each day you'll discover something new and be able to build your own style from there.
Yes totaly right they appreciate artists works when they passe away
And they start giving their works a new meaning over the time as you said even meanings reverse to what the artist want to say.