I would actually want to know if there are rules or not. E.g. the rules for a Schengen tourist visa are clear: you can only be 90 days in the area in 180 consecutive days (
https://ec.europa.eu/home-affairs/what-we-do/policies/borders-and-visas/visa-policy/schengen_visa_en). 181 days after your first entry, the requirements reset. For an Argentine tourist visa all I know is you get 90 days, but I do not know about restrictions of renewal.
In my case, I am not planning to be a permatourist, I plan to be home most of the time. Though if I would not go to Uruguay next week, I would overstay my visa by about 10 days. Therefore, I will visit a friend of mine in Montevideo for 2 days. I go back home after Christmas and plan to come back for about 2 months at the end of January.
5 years ago, I went back and forth to Uruguay (and once to Chile) when I had an Argentina girlfriend (not knowing if it is legal or not). No one complained. My last trip to Uruguay was cancelled when the relation broke up, I booked a ticket back home and overstayed a couple of days. I did not know I should have gone to migraciones, I went to the airport and boarded the plane without paying an overstay fee, no one seemed to care.