It would be interesting if you would open the (30) resorts that I see with availability in Weeks, and see what their check-in days are in Points.
A resort has to have a hotel-style front desk in order to have every-day check-ins, regardless of whether it's Weeks or Points. If there's no one at the front desk doing check-in/check-out, and no housekeeping on duty every day, they can't have every-day check-in.
I believe the majority of TS resorts, everywhere, are still traditional, with one-three check-in days. In the 160-plus exchanges/EVs/LCs, whatevers, I have done, anywhere, it has never been to a resort with every-day checkins. But, if a person has always gone to a resort that has every-day checkins, I can see how they might think all/most of them do.
But, what I think doesn't matter.