Yes, and it kinda defeats the purpose. The event is in large part about personal responsibility and accountability. Adding trash service out there would make it even easier for people to bring more than they need, consume more, leave shit everywhere, etc. And that money is already used for existing services and the BLM permit paid to the government, it's not like it's just sitting there ready to be spent on trash services. And at that point, increasing ticket prices makes it more inaccessible to people, and then cue the complaints that it's an event for such-and-such rich people blah blah whatever.

You might want to familiarize yourself with the ten principles. Trash service would undermine some of those tenets