This is equally as annoying when it comes to navigating for gardening purposes and you end up on a banned post's page because banned posts break navigation. I can see why it wouldn't do that for blacklisted posts since blacklist hiding is more visual than functional (they still get paginated and all) but also agree on the front that... I don't want to be navigating and suddenly come across something terrifying, since I blacklisted it for a reason.
At present, no way to filter out blacklisted posts in A-D navigation that I know of. Builders can strap their long line of blacklists to the search but even that's not particularly intuitive.