Major Flaw with "Home Alone 2: Lost in New York" (1992)

I love "Home Alone 2: Lost in New York". Growing up I had a huge crush on the homeless pigeon lady. But there is one major issue I always take umbrage with every single time I watch the film. The whole reason Kevin gets separated from his family at the airport is because he stopped dead in the middle of the airport while everyone's running to get on the plane. And why does he stop? So he can insert batteries into his "Talkboy". That's horrible priority management on the part of Kevin. Why did he need to use his Talkboy right then and there? Once he pops the batteries in and it's all dramatic, he just puts the damn thing away for later.

Do you seriously mean to tell me that this kid who is smart enough to rig up an entire abandoned duplex apartment to nearly murder Joe Pesci and Daniel Stern is that fucking dumb that he's going to risk getting lost at an airport (possibly kidnapped, murdered, etc.) just so he can do something that could just as easily been done on the plane? Without Kevin's mistake there is no movie, but there had to have been a better way for him to get separated from his family. I think they just wanted to really feature the Talkboy as much as they could, but that scene was a joke and as the crux for the entire plot to follow that's a big fuckup on the part of the people who made the movie. By the way how funny would it have been if he got on a plane to Haiti or something instead. Why wasn't that sequel made?