Wow, some pretty passionate opinions here!
First, I like babies. I like kids. Its fun to see them enjoying their plane ride.
In first class, though, people are paying for a superior comfort experience and I think they should get it. When I pay a $4000 premium for YYZPVG, I'm certainly expecting more than a few drinks and a lie flat bed for my money, I'm expecting $4000 worth of comfort. That doesn't include children crying incessantly.
Since AC doesnt offer an F cabin, it stands to reason that J should be infant free, IMO. We wouldn't even be having this discussion it we were talking about a high-end restaurant.