True Left

I think it depends on the kind of scam. If the scam involves appealing to the mark's greed, and the mark falls for it due to being unable to resist temptation, then the mark does deserve it. Whereas if the scam involves appealing to the mark's compassion, and the mark falls for it out of a sincere wish to help a good cause, then the mark of course does not deserve it.

"Does it not occur to them that nobody chooses to be “stupid enough to fall for a scam”? Why would they want that to happen to themselves?"

No one wants to fall for a scam, but many people want profit unearned through honest labour, hence fall for greed scams which apparently offer this to them. Would you agree that X who does not want unearned profit deserves better than Y who does? If so, then since X will avoid the greed scam that Y will fall for, then would you agree that both got what they deserved?

It is true that Z who (like Y) also wants unearned profit but who (unlike Y) is smart enough to see through the greed scam will (like X) also not fall for it, but then it is Z who has not gotten what they deserve. Comparing X to Z, X is still the better person, yet Z by compensating with mere intelligence is doing no worse than X is. Does this not seem unfair to you? Or comparing Y and Z, both are equally bad people, but Z by compensating with mere intelligence is doing better than Y. Does this not seem unfair to you?

We should want a greed scam to exist that both Y and Z fall for, leaving only X unscathed. Do you not want this?

"condoning of scammers"

If the scammer uses only greed scams and is scamming purely to take down Y and Z and all others like them, and then using the gains to help X and others like them, the scammer is doing God's work. If the scammer is in it for personal gain, but still only uses greed scams, at least they are only gaining at the expense of other bad people, which makes them harmless. The only scammers who are our enemies are those who use compassion scams.