Typo. 65 - 75% Town means a random Lynch is likely to hit Town.
You've listed several of the reasons Don's play has been Scummy, so I wouldn't belabour them here. Looking at Don's play, he's either a Scum trying to coast (he has also consistently been deflecting attention to inactives/other players), or a very bad Town player. Knowing how Don played in the last game, I can't rule out the latter hypothesis. What I would categorise Don's play as is unhelpful. Whether he's Scum or Town, he has been completely unhelpful (and actively harmful by trying to deflect suspicion) in the 20 pages I've read.
If I had strong reasons to suspect someone to be Scum, I would prefer Lynching them over a player that was merely unhelpful (but whose alignment I was unsure of), but if I had to Lynch a player when I don't have strong Scum reads, I would rather Lynch unhelpful players (it's why after Don I would go after the inactives).
To explain my perspective more, I mentioned last game that I'm asymmetric as a player — I'm much better at avoiding suspicion as Scum than I am at Scumhunting as Town — and I had a few wrong reads during last game. As such, just because someone appears Scummy to me, I can't consider that strong evidence that they are in fact Scum. I have to factor in the fact that I'm not a very good Scumhunter and apriori
I would expect a substantial fraction of my reads to be wrong.
Factoring in my lack of ability, to decide who to Lynch D1, I adopt a heuristic of going after the player who if I was wrong on them and they were indeed Town, I would regret it the least. That leads me to prefer the most unhelpful player, and as of Page 20 that was @Don DaSlayer
the above is an extension of my earlier answer, so you'd probably want to see it.