In fact it is a bit more severe than that as you are effectively deanonymizing yourself. If everyone else is using a 3-hop circuit but your crawler is using jus

In fact it is a bit more severe than that as you are effectively deanonymizing yourself. If everyone else is using a 3-hop circuit but your crawler is using just 2 hops, it wouldn't take much effort to isolate your activity in the network since you're effectively standing out.