As a general rule I will no longer make family links to memorials that are "burial unknown", especially if there is no birth or death dates. This is "Find A Grave", not "Free Family Tree Game". You did not find a grave, you typed a name in, likely with no real evidence of where the final resting place is for that person. I consider such memorials invalid and contrary to the purpose of Find A Grave stated in the FAQ, so I will not normally link to them.
When I started on FindaGrave, I wanted to help provide original information on burials that was difficult to find elsewhere. I reasoned that an accurate account of headstone, cemetery records, and information related to the burials would enhance people's genealogical research, helping to add new information or confirm that which they had already gleaned elsewhere.
However, a great number of people have decided it is a resource better suited to making a free family tree where they can replace what can be found at the gravesite with information from other random (and often dubious)sources, perpetuating any mistakes that such sources may contain. If some family tree hints they are buried in some cemetery, why bother checking? Just plop the memorial there. Don't know the cemetery at all? Just plop them in one you think is close by or leave it as "burial unknown", maybe somebody will go through the trouble of contacting you after they put in the hard work to actually find the grave in another cemetery. Either way, you still get to claim the research as yours because you "found" the grave first.
Because of these things, I am much less active on FindaGrave than I was in the past. The effort and personally funded expenses to physically locate and accurately record graves as an uncompensated volunteer just isn't worth it if the reality of the website being more like "Their-Grave-Could-Be-There.com, the free online family tree maker" is good enough for most members.