That is a crap-bucket load of demonetisation going on there.
I don't have a feel for YouTube numbers but very ballpark what sort of $$$ would you have expected in the past to earn from a video with 500K views?
I am glad to hear you are bringing the videos over to DTube.
About two to three thousand dollars.
Umm, that's a chunk to lose. We will all have to get motoring on the upvote button on your vids on steemit to compensate.