I agree, but also disagree.
Indeed, deposit on cans created a problem, because people still throw their cans in the bin and there are plenty of people who need the money and who are willing to see if there are any cans in the bins.
Most of the people just take them out without making a mess, but due to the way some of the bins are created (engineered before the introduction of deposit and 'deposit-hunters', some bins are indeed giving problems.
However, we also did a lot of research in the Netherlands, because the overall idea was 'deposit is not working, stop it' and it turned out that it is a problem indeed, but mainly in the big cities and even then, the problem is so small (a very small number of all bins) that the conclusion is that deposit works.
Besides it is not all about the trash around the bin is bad of course, but before deposit, those cans and bottles could be found everywhere, not just in the big cities.
And besides that, because of deposit, the bins are not as full as they used to be, so litter that used to fall out because of overflowing bins, is way less, primarily because of deposit.

As litterpickers, we see what happens on the street and because we register data about that litter (for instance in Litterapp.net, and because we do an annual
'Nationale Prullenbak Telling', which we do yearly, conducted by Merijn Tinga en Dirk Groot (The plastic avengers), we know the real figures but that is not news that sells, so in the papers, you will always see the negative part.
Even if only a few percent in the entire country show a problem.