A critic may reject some miracle stories as legendary, and not others, with no inconsistency at all for the simple reason that even if one holds miracles to be possible, one need not hold legends to be impossible! There are other factors, literary and historiographical ones, that might lead a critic to conclude that even though miracles can happen, it does not appear that in this or that case they did.
Robert M. PriceI wonder how appropriate it is to try to 'argue someone into the kingdom.' Many apologists hotly deny any such charge, but I don't believe them. The tenor of almost all apologetics literature makes it plain that this is their intent.
Robert M. PriceDoes it take a blanket presupposition for a historian to discount some miracle stories as legendary? No, because, as even Bultmann recognized, there is no problem accepting reports even of extraordinary things that we can still verify as occurring today, like faith healings and exorcisms. However you may wish to account for them, you can go to certain meetings and see scenes somewhat resembling those in the gospels. So it is by no means a matter of rejecting all miracle stories on principle. Biblical critics are not like the Committee for Scientific Investigation of Claims of the Paranormal.
Robert M. PriceIf, when we compare two versions of a story, the second known to be a retelling of the first, and find that the second has more of a miraculous element, we may reasonably conclude we have legendary (or midrashic or whatever) embellishment. The tale has grown in the telling. This sort of comparison is common in extrabiblical research and no one holds that it cannot properly indicate legend formation there.
Robert M. PriceI do not expect that the mere fact that I was once an evangelical apologist and now see things differently should itself count as evidence that I must be right. That would be the genetic fallacy. It would be just as erroneous to think that John Rankin must be right in having embraced evangelical Christianity since he had once been an agnostic Unitarian and repudiated it for the Christian faith.
Robert M. Price