Since it isn't a public weight limit, rather for inclusion in a sport, this seems okay. Has a valid reason (safety), which is directly affected by the weight of females being tossed around like sacks of potatoes.
I attended a public (coed) school, and I think that there are benefits you get from being with the other gender. If you split up boys and girls, you could be setting the children up for antisocial behavior later on in their schooling, and maybe into the rest of their lives. It may not be completely obvious, but I think there will be some discomfort for some students when they are re-integrated into a coed world.
I agree... this is the pot calling the kettle black. What is this, conservatives can dish out criticism but can't receive it? You can't play the game without expecting the opposition to be on the same field, using similar tactics.
I say set an example. Local authorities need to go overboard a bit and pursue the thieves with extreme persistence so that they can be brought to justice. Then alert the media and maybe others will be scared out of repeating the "swipe goods after being laid off" crime.