that's mainly down to logistics, worst case they have to sleep on the floor and shit in a bucket for a few days, it won't kill them.
question still remains what happens afterwards, no one wants to be holding the hot refugee potato if other countries suddenly change their mind or simply drag their feet and you can't get rid of them.
same time which made grandma think it's ok to give you wet kisses, highly doubt she wanted to fuck you (heck, the french still try to suck off each others face every morning). or when you could have male kindergarten teachers or dudes hugging without it meaning pedo or gay.
I simply don't describe to the notion of "oh, you like X? THAT CLEARLY MEANS YOU WANNA FUCK IT!!!!!" that cropped up in recent years (honestly at this point I immediately assume projection to distract from their own fucked up tendencies).
that's why, for now, I give him the benefit of doubt of simply being an old man with weird habits, who especially after this week many would say isn't all there to begin with. pair it up with how the west idolizes kids, old people adoring (grand)kids and some families simply having weird customs (who was the politician again who kissed every female relative on the mouth? can't remember) and there's suddenly some logic behind it.