I agree. That's ridiculous
I was sure they I had read over and over that the tour groups were all gone by the end of February as their breaks were in January and July. But there they are

Maybe they'll be gone by the end of the month? We went the last week of February in 2011. We stayed at CSR and the Poly. I did not see one single tour group in the entire 10 days. Not at hotels, not in restaurants, not in the parks. So unless something has changed I think they are gone by the end of February.
I will say on one summer trip we stayed a night at a Value and it was during a football and volleyball championship of some sort. There were teens everywhere you looked. They held doors for us, smiled when you walked by and even gave up their seat for my obviously sick 8 year old while checking in for M.E. They couldn't have been nicer.
Just from a crowd perspective though I understand nobody wants to wait in lines like that for food etc.
ETA) I looked it up. Apparently Argentinians are off school for break until the beginning of March.