You don't necessarily need the destroyed legal-ballots-turned-into-illegal ballots for Trump to win.
Assuming the Glitch (Hammer/Scorecard) is real = tens of thousands of votes.
Assuming dead people voted = tens of thousands of votes.
Assuming people moved away voted = tens of thousands of votes.
Assuming after dead line votes = tens of thousands of votes.
And if ballots really had a watermark, game over anyway.