I would say ATS workload is higher now than when the MNG collision occurred, less staff coordinating more combined frequencies over a larger area. So the situation is worse now than at the point the collision happened. It is becoming a regular occurrence where it is hard to get on the air to broadcast because of too much traffic information being passed about, and then trying to monitor that while on CTAF talking to 5 other conflicts.
As said many times the technology to have it all displayed in front of the pilot exists and has existed for years, the government could subsidize its fitment to existing aircraft and mandate all new registers to have it so that all pilots can see all other traffic right in front of them and get alerts on proximate traffic. Just look at flight aware and other flight trackers, they show you where it is and where it's going, it's not that hard. It would not be hard to implement a system that provided that to the pilot and also cost far less in the long run than the road block mayhem that is ATC at present.