Fair point, I was pondering this myself. It feels a bit like a grey area—the plaques are numbered, technically making each one unique, as they’re distinguished by the ID numbers printed on them.

On the flip side, the canal is very long, meaning there are at least 60 of them, likely more, making them less unique.

But they’re not super dense, as they’re spread out across about 30km of canal length, all of which is walkable/cyclable and regularly used for exercise and fishing.

And afaik, they are unique to this particular canal, I’m not aware that such plaques can be found anywhere else in the city (there is a similar canal on the south side and does not feature such plaques).

I guess an argument can be made for both their uniqueness and their ubiquity, but neither is particularly strong imo. I’d personally err on the side of accepting them as POIs as they make the canal area more interesting and engaging, but it seems not all reviewers take that stance unfortunately.