Surely a genealogist uses all means at their disposal? It's an investigation so you use all the evidence provided. They provided the evidence, it was used, why so shocked? FindMyPast treat their customers like dullards. Who would have thought the references would be used to ascertain you had the correct family before purchasing the record? 
If they did use all the means at their disposal I would agree but if you read what has been written on the forums you will see many are not.
They are using the transcriptions but not going on and looking at what is the "original resource" in this case the image.
That is what is shocking to me.
This is not my imagination they admit on the forums they have not purchased the image.
This common decency thing IS lopsided. They expect folks to pay for records that are very likely to be wrong - names like Smith, Jones, Taylor etc, the list is endless. If you discover an error on an unrelated family on the page your family is on, they expect you to buy the correct family (on the same page you already have) to report the error. Who in their right mind would do that? You are just trying to be helpful and improve the service but FindMyPast want their pound of flesh. I condemn that behaviour.
If it was only people researching ancestors with common names then yes, I could agree but unfortunately it is not.
It includes people with far less popular names.
People are complaining of transcription errors when they have not even looked at the image so how can they possibly know whether the transcription is in error or it is an accurate transcription of what is written.
It is very easy to moan and condemn something but at least they have made the effort.
Try looking at the situation from their point of view.
I have even seen people asking if they will be able to ask for look ups from it when it becomes part of the subscription site. If you were in charge of FindMyPast would that king of posting make you think I shall add the 39 to the subscription or would it make you think, no way mate it will stay as pay as you go for as long as possible?