I guess my perspective is, normally when a resort or HOA leaves the points system and is sold, owners are removed from the Club Wyndham points system, at some point maintenance fees end, and once the resort is sold the former owners receive their share of the proceeds. Stop here, do not pass GO, that's the end of it. I think that there's a Villa Rica owner earlier in the thread that shared that this is how it worked for them. Wyndham (and the HOAs) could have done this here and fulfilled their legal obligation.
But in this case, perhaps because of the scale/publicity(?), they're offering an alternate option, which is the swap into CWA. Only you can decide if that's a fair swap for you. To me it seems like a bonus for people who think it is fair, because it's not normally offered. As you say, giving up your equity is like paying for a timeshare again - at a severely reduced price. They are basically giving you the opportunity to buy a CWA ownership for whatever your share of the sale would have been, which is far lower than any discount you could get it for from telesales. So the question each owner will have to answer is whether they want that. Or you could just take your share for sticking it through to the end and that would be the end of it.