"Baby loves booty"?

I saw this video on Facebook of this women bouncing her butt all around in a baby's face. The baby was slapping it and sticking his face in it, clearly innocently and playfully. Not understanding what she was doing. Personally, I was instantly disgusted. They were sexualizing that poor baby and then posting it for everyone to see. But I seemed to have the unpopular opinion because several people on my timeline shared it and they were dying laughing. There also wasn't one comment agreeing with me. What do y'all think? Am I reading too much into it?