It could be infinitely wide too if they desired. It shouldn’t be that hard to do I wouldn’t think. I would suspect they limit the time a chain can use though to eventually escape out, though this still protects data because it obfuscates legitimate data that it wants. The goal isn’t to trap them forever. It’s to keep them from getting anything useful.

That would be reasonable. The people running these things aren’t reasonable. They ignore every established mechanism to communicate a lack of consent to their activity because they don’t respect others’ agency and want everything.