T.F.
We've vacationed several times at the Hilton at Marco Island and we love the area.
We had some friends who lived in a nice community and our daughter also went to some amusement park type place that was a lot of fun. People were very friendly. Our daughter made friend there and remains friends with these teens (they are not druggies either).
We found the beaches and overall area to be clean. We felt safe enough to do a lot of walking, never ran into drug ridden teens or teens acting unruly at the resort or at places we visited in Naples.
I don't know about the schools since we only vacation there.
Yes, there are a lot of snowbirds there but we didn't see issues with it. We enjoy the golf communities as well.
I think the negative post has some past history of being from a divorced family and someone possibly forced to go live somewhere they didn't want to live therefore, anything and everything about it would be negative. I am sure if I were a teen just out of high school and sent to a new place to live where I might not necessarily want to go.... I'd probably be negative too.
We found a lot of positives in the area and we will certainly vacation there again. We make the Hilton Resort at Marco Island our "home" while there.
Good luck.