Some or many people insist Neanderthals were humans. Many people also insist humans are apes. I don't argue with those people. They have their reasons for believing what they believe and I have reasons for believing what I believe. I have quoted peer-reviewed articles which make a distinction between Neanderthals and modern humans. Others can make of those articles what they like.DNA from ancient fossils suggests interbreeding regularly occurred between the two species by about 45,000 years ago, two studies find.www.sciencenews.org
This is because Neandertals were humans.
Scientists studying the DNA of Neanderthals say they can find no evidence that this ancient species ever interbred with modern humans.