I agree that none of us can be confident our interpretation of the contract is correct until
DVC starts to take action showing what they will no longer tolerate (so there is no basis to tell others whether their use is safe or dangerous, except in outlier cases), but it is incorrect to say no one is in violation until DVC tells them. There are absolutely people Disney currently believes are in violation (and it’s speculated that many AUL sellers have already been informed as such).
Just as we should not judge, we also shouldn’t reassure people who are renting regularly and frequently that they can’t possibly be in violation simply because Disney has not chosen to target them yet.
I seriously doubt that Disney would be doing anything at all if they thought the problem impacted less than 1% of the DVC points.
Disney has separate reasons to claim commercial renting is not common, and of course, common is in the eye of the beholder, like “frequently” and “regularly.”
I am nearly certain I’m worse at Captcha than the average bot, even before you consider the 5AM hour pre-caffeine.

Having said that, I would be in favor of something that slows down automated scripts or spec renters before they can get to the availability page, even if it occasionally causes me minor annoyance.
Don’s post said it better than I could, this is not actually a tiny problem or they wouldn’t be dedicating headcount and resources to address it.
I would not assume that just because someone is doing commercial activity for profit that they are determined to maximize profit. You can still be a for profit corporation even if you leave money on the table sometimes. Believe it or not, even Disney sometimes charges less than the market will bear!