if someone is mostly feeling secure about their appearance, it doesn't really matter. but weight can be a very sensitive subject, and you can't really know whet

if someone is mostly feeling secure about their appearance, it doesn't really matter. but weight can be a very sensitive subject, and you can't really know whether it is or isn't for someone you don't know well. in the worst case, comments about weight can be a trigger for people with eating disorders. it's just not worth it when there are plenty of other things you can compliment someone on. and btw, I'm not just talking about personal risk (eg, what if they report me to HR!?); it's also about being considerate of the other person. just because you intend something as an innocent compliment does not necessarily mean it is pleasant to receive.