The ones from Reddit are disgusting and I can't imagine that being the result of proper maintenance. Zincs with legends are, though, more prone to wear and trouble if you're not taking care because of the reduced coating in the areas of the legend itself, making it easier to break down.
I've had a blank 37-key set put through heavy use over 6 months, and there are no chips or wear at all so far.
If you decide on the legended caps, you'll simply have to take care on your usage. Perhaps rotate them out every once in awhile, make sure to take care of hygiene, and develop habits to avoid extra wear, like resting and rustling fingers while on the keys.