The events have nothing to do with these problems. Like Stivi said, these are issues that are valid around the world and bigger than a few parties. The people of Tulum are ultra sensitive on this topic and do a great job at raising awareness. Most of the events do their part and I’d love to see them do even more. More events around the world should be as green as Tulum events.
Yeah I think you need to remember as well it's a poor country so the people will jump on any increased tourism as it benefits them so it will be sensitive subject. It's similar to the Thailand issue where they recently closed an island due to much tourism causing litter issues etc.
I must admit I was in a hotel in Cancun in 2017 and the hotel actively pushed a "green" ethos and used reusable cups and even had a turtle egg conservation program. Hopefully it will get better and better.