It does not immediately tell the user if the "best" resource is in that list, only the quantity. Recommendations for Improvement
If those 286 resources are not ranked well, it can feel like a "needle in a haystack" situation.
I find that knowing I have 286 resources is useful, but only if the search engine immediately offers me filters like 'peer-reviewed' or 'last 5 years' to narrow down the list, otherwise it's just overwhelming.