This would be a change to the way that it was written in the fine print in older directories. The devil is in the details and the details are not clear. "Benefits under the Presidential Reserve program" is the wildcard here. In old verbiage there was status and membership type. Is a PR benefit the amenities or booking, discounts, and upgrades which is more status type. PR is a different type of point so I don't really see that they can legally take away the amenities attached to the points (inasmuch as they tend to view most of the questionable things that they do as legal.)
I'm checking directories back to 2009-10 and here's what I find:
2009-10: Doesn't specify what benefits are or are not given when points fall below 1 million. The closest thing (which requires some interpretation) is this: "Eligibility Requirements: CLUB WYNDHAM Presidential Reserve program and benefits
are available to CLUB WYNDHAM Plus Members allocated at least 1 million CLUB WYNDHAM Plus points through the purchase of an ownership interest in a Presidential Reserve Suite(s)." My reading is that if you don't have at least 1 million PR points, you're still a Club Wyndham Plus member and would get CWP benefits like 10 month bookings.
2011-12: Very similar to 2009-10, with no direct reference to what benefits a sub-million PR ownership would or would not receive: "The CLUB WYNDHAM Presidential Reserve product and benefits are available to CLUB WYNDHAM Plus Members who have purchased an ownership interest in a Presidential Reserve Suite(s) with a minimum allocation of 1 million CLUB WYNDHAM Plus points."
2014-15: Remains similarly non-specific as the benefits kept or lost below 1 million points, but still seems to imply that the owner is a Club Wyndham Plus owner regardless. "The CLUB WYNDHAM Presidential Reserve product and benefits are available to CLUB WYNDHAM® Plus Members who have purchased and continue to own within one contract (i) an ownership interest in a Presidential Reserve Suite(s), or an ownership interest at a Presidential Reserve Resort with an Assigned Use Right to occupy a Presidential Reserve Suite(s), with a minimum allocation of 1 million CLUB WYNDHAM Plus Points; or (ii) a minimum allocation of 1 million Presidential Reserve Points in a Club that owns an ownership interest in, or an Assigned Use Right to occupy, a Presidential Reserve Suite(s)."
2018-19: Now we have what's essentially the current language, which clearly allows normal CWP benefits: "In the event that a CLUB WYNDHAM Presidential Reserve Member’s ownership interest or Assigned Use Right in a Presidential Reserve Suite(s) totals less than 1,000,000 CLUB WYNDHAM Plus points, Member will no longer be eligible to receive benefits under the Presidential Reserve program. Benefits shall be limited to Advance Reservation Priority (ARP) bookings in a Presidential Reserve Suite(s) at Member’s “home” resort from 14 to 12 months prior to check-in date, and benefits available to Member under the CLUB WYNDHAM Plus program based upon the number of points owned."
2021-22: Same
So if you have something older than 2009, it would be interesting to see what was the verbiage at that time. Otherwise, there's no reference anywhere going back to 2009 which restricts a PR owner with less than a million points to only booking CWP locations in the 30-day window. All signs seem to point to such an owner being a CWP owner (which makes sense, because the directories also tend to categorize Presidential Reserve as a type of ownership that falls under the broader CWP umbrella), just with very limited (almost nonexistent) PR benefits.