The Scientific American take .

https://www.scientificamerican.com/article/bronze-age-ldquo-beaker-culture-rdquo-invaded-britain-ancient-genome-study-finds/

Arguably taking the the date for the henge rather than the erection of the megaliths for their " “The people who built Stonehenge probably didn’t contribute any ancestry to later people, or if they did, it was very little.”" comment .