KdB didn't get booed, the whole Belgium team did when they had the ball for long spells but it wasn't just him tbf.

Song was a bit crap but fairly harmless - always the same tbf, was sang at Griezmann a few years ago. If anything just a nod of appreciation that he's their main man and him enjoying being the pantomime villain by scoring and celebrating in front of the home crowd which don't often see him do in the PL from memory.