I'd surmise that Wyndham probably has more rental volume than most other timeshare entities as a general rule - but that's just my sense of things based upon feedback I've seen from other timeshare owners posting here on TUG and on other forums that I moderate/admin. I don't have any hard data that proves this assertion to be clear.
So it's relative with Wyndham I think. We still see quite a few Wyndham rental postings on the FB groups for example. So while Wyndham is certainly targeting what they view as commercial renting activities - it's relative at the same time - at least on some level. From what I've observed, there does seem to be a link between advertising rentals and being identified as having engaged in commercial rentals. I would love to know, for example, if someone who only rents through points managers such as Koala - and has never advertised any rentals on any public forums - have actually been tagged and have received commercial use warnings from Wyndham.
I'm sure as
@Jan M. mentioned that Wyndham is also watching other metrics such as applying GCs same day or the day before a reservation in an attempt to skirt the rules for priority blackout dates - but this is simply not going to be possible once the changes that have been announced are put in place to proactively prevent GCs from being used outright via the website.