Enforcement would take time from a public agency employee's real duties. (Unfunded mandate.)
And how will it be enforced?
nobody knows. There is not even info how much fines will be; there is only vague "offender will be mailed warning or fine". Enforcement will likely be AB Parks employee (temp maybe, for season) patrolling parking lots & taking down license plates, then in office searching database of registered vehicles. I don't even think hanging pass of dash will be required, just computer registration.
If garbage is the real problem, I would be willing to pick up trash in lieu of payment.
I am already doing that for many years, not just in K-country but Banff, BC Coast, etc - wherever I hike. But here we are talking wide trashing of couple of popular areas close to Calgary, problem augmented last yr because of Covid. I spoke to Park employee; she told me about horror show, sanitary pads, feces, vomit etc. when restrooms had to be closed because of Covid eruption.
Does Canada have "Adopt a Highway" program, as US does? A volunteer group commits to cleaning up a small section of public roadway, generally a mile or so, for a while, and a small recognition placard is erected roadside. Some jurisdictions also provide materials (gloves, trash bags) to the volunteer group.
There are some K-country volunteer actions I heard off, but that would have to be after every weekend, and some pretty discusting work too. Parks are simply trying to offload cost to private sector; last winter there was idea of x-country skiing pass that didn't work. Now they are trying this (fee is supposed to cover cost of winter x-country ski trail maintenance too).