I would be interested in hearing other peoples opinions on this:

Personally, I don't see any reason for his prior games to become less desired or less valuable, reason being (unlike musical artists, for example) he doesn't get a royalty from any game sold (correct me if I'm wrong?), so it's not as though a purchase of Ghostbusters will support him financially. Were that the case, I get it completely.

I suppose if someone were mentally unable to enjoy playing Ghostbusters, constantly reminded of this crime (if convicted of course), but I don't know that would be the case with most people.

I think many would agree with you, however I don't believe (really not sure though so maybe someone else can confirm/deny) that the designers don't make royalties/bonuses based on the number of sales for a particular pin.
What I'm asking is: if anyone bought a new pin designed by JT, would that put more cash into his pocket?
If the answer is no, then who cares if he designed it? Buy it or don't based on whether it's a good game.

(I disagree, but still respect some of you who might chose not to buy a new release designed by JT out of principle/whatever as that is your choice, but let's not confuse these two reasons)