OKAY so I have my Newgrounds page mostly updated now. I apologize to any followers of mine whose feeds were shat in. Going forward I will actively update my Newgrounds page, marking fan/gift art as sketches, with everything else going to the portal. I made my Newgrounds account around the time it was gradually harder to share art on twitter, as a sort of insurance, but now I think it will be better as a Gallery instead.
I look forward to the new decade.