The scientists are using evidence to assert something. Maybe it's flawed but unless you're going to publish and refute it, calling it "anti-european sentiment" based on nothing makes it seem a awful lot like you're the one being political.
If this appears like pseudo science, then because little is known and assumptions have to be made. For example they can't extract a full genome. But it is a game of probabilities and statistics. In absence of harder criteria, this is likely the most probable theory, therefore it is worth to be discussed.
Likewise, I am not sure how far and quickly was travel at the time or how far the ice had receded 10 kya, but its fair to assume they had fire and ships. Also the isles were connected to continental Europe at the time via doggerland. Maybe they were into timber trade or followed the big game like woolly Mammoths, which are attested 14 kya, or worse taken as slaves or otherwise driven by competing populations.
The article says that they did:
"...the ancient skull to obtain a few milligrams of bone powder. From this, they were able to extract a full genome,"
I will refine my idea so that skin color is not useful for purposes of describing one race’s general superiority or inferiority.