Timeshare presentation at Westin St. John Vacation Club, how does anyone fall for this?

My partner and I got a 4-night voucher for $499 to stay at the Westin St. John vacation club. They put us in a one-bedroom, and our presentation was scheduled for the last day of our stay.

I started a timer the second it kicked off. The salesperson was friendly at first, then got noticeably more aggressive as it went on.

I have to say, it was not remotely convincing. At no point did any of it feel close to making sense. How do people actually fall for this?

The pitch:

• 2,000 points/year for an $85,000 share
• 15% interest rate
• Yearly maintenance fee: ~$1,300–1,400

Other red flags:

• No real website demo?? everything shown was fake/placeholder data (my biggest red flag)
• Kept pushing 2-bedroom pricing even though we're a family of two
• Kept talking about "planning for retirement" but we're in our early 30s LOL
• I told him we spend about $2k/year on vacations total; this offer be near 8k per year!
• Kept comparing it to the Ritz-Carlton St. Thomas
• The property itself looked pretty outdated and their beach is a dock
• Straight-up contradicted himself: first said occupancy was low because they're renovating, then said they're currently at 100% occupancy (baseless claim)
• Claimed you could transfer points to United at a 1:3 ratio (VC points to United points), could be an honest mistake, but it's the other way around
• Said "I won't be mad if you're honest about why you're not buying in" then proceeded to get mad, walked away, and never came back :)
• After the first no he started showing us smaller offers, 40k then 20k.. still # of nights to $ ratio is too high.

Before he walked away, he asked me to initial that I'd declined the offer and to wait for his manager to run a survey. Five minutes went by and no one showed up, so we started talking out loud about how bad the offer was, other couples in their own presentations overheard us, and another salesperson came over and just told us to leave lol

Would love to hear if anyone's actually run the numbers and found one of these worth it, because I'm struggling to see how the math works for anyone.