The problem being. Although mods can alter things and have certain powers within the forum. We can't police everything. I'm afraid, a lot of the time it's buyer beware.
Would we need to see documented evidence a car is in roadworthy condition. Would we need to see qualification that a hairdresser had appropriate qualifications before advertising their services? The list could be endless.
Not to mention the problem of what 'I' call sticky fatigue. If something is there long enough, it simply gets ignored. It's just a fact of life.
In principle your point is valid. But as you say the onus is upon the householder to ensure rubbish is 'correctly' disposed of.
It's almost like juggling fried eggs!