If you read the linked article, I think you'll find that the answer that the Buddha would have suggested for your question is silence ;-)
However, I am not well learned in the ways of Buddhism, so I shall attempt to answer your question with words. What do you mean by your question?
Do you mean: Was there a person exactly as these stories describe that did exactly what the stories describe and said exactly what the stories describe? There is no doubt at all to this answer: no, there was not. Despite my lack of education in Buddhism, I feel pretty confident that the subset of Buddhist practitioners who believe in such a thing approaches zero (I'm sure there are some, but not significant). Buddhism is a religion without dogma after all. Why else would a respected scholar on Buddhism write an article pretty much saying that the stories about Buddha are likely to be incorrect in part or in whole?
Or is your question: Was there a person who was the originator of the Buddhist religion? I think it is highly likely that the answer is "yes". I mean, it's possible that there was a group who started the religion, but it seems improbable to me. Look at any modern religion/cult. How many are started by a single person (all of them that I know about) and how many are started by a group of people (I assume that there are some, but I don't know of them)?
Or is your question: Are any of the stories about the person who started the Buddhist religion true? Again, I think this is a pretty easy answer: almost certainly yes. I mean, what the heck are they saying about him? He was born. He struggled until he found enlightenment. Then he started a religion. I mean the religion exists today. That's pretty good evidence that the original leader did some stuff.
Or are you asking: Is it true that the Buddha really was enlightened in the way he claimed? I can answer that one easily too: I don't know. ;-) And the really cool thing that I like about Buddhism is that I don't think it really matters all that much. You can learn about Buddhism, use the bits that are helpful to you and chuck away all the rest. Other Buddhists will pretty much think you are doing a good job -- or at least that's been my experience.
HN posting rules advise me to view your question charitably and to assume good faith. In that spirit, I hope that even if you never intended to ask any of the above questions, you can pick one or more of them and get answers that will help you. If the question was rhetorical and simply meant to belittle others who think differently than you do, then I apologise for wasting your time.