I can't believe I'm replying to this but...I can't disagree more.
"Model S refresh coming soon": As someone else pointed out, people in the community have been speculating about a refresh for well over a year. There is no public, reliable information about the timing of another Model S refresh. Also the refresh, when it comes, might not be to everyone's liking. I still like my pre-2016-refresh Model S, in some ways better than new production.
"Questionable Q3 production results": I don't know what you call "questionable". I'm sure that no matter how the Q3 numbers go, someone's going to question them. What effect this has on buying a Model S I'm not sure.
"CEO off the rails": His colorful behavior is irrelevant to the question of buying an inventory car. Honestly I don't read his tweets and I still haven't watched the Joe Rogan interview.
"Executive team leaving en masse": Tesla has always had a lot of turnover. Not as dramatic as you make it sound.
"Tax credit set to phase out": I don't get this. If you want the Federal tax credit, buy sooner rather than later.
"Unlimited supercharging phase out": This could be significant for road warriors. For most people I'm guessing it's not. (Note that what's been discontinued is unlimited FREE LIFETIME Supercharging WITH A REFERRAL.)
Evaluate each CPO on its merits. Ignore the noise.
Bruce.