There were clearly actual long term MNers who supported Trump, and who repeated the memes being chucked at them but otherwise took normal part in the life of the site (and not just for cover!).
That is what Putin's stooges are instructed to do.
How do you know it's not "for cover"?
I've done a search of the most vocal Trumpettes and bar Ivanka, they had all disappeared by the 6th of January within a few days.
Yes, there were a few long term posters who supported Trump, but with a different pattern.