// I think it is not right to play games with four year olds minds over an "egg" bigger than they are. //
I can see both sides to this. On the one hand it's strange to lie to little kids. We know they haven't developed a b*s filter, so they're going to take everything as truth. On the other hand we lie to them about santa claus, the tooth fairy, the easter bunny and religion anyway. It's all well intentioned, as in this case.
Remember this comes from the Daily Mail, and will have been blown out of all proportion, if not completely fabricated. The truth could well be that there was 1 single parent who had a problem with it, and their child wasn't even that bothered, but that would've been a rubbish story which wouldn't have been critical of the teaching profession, so not DM material.