Absolutely agree with this. Multiple pax on a single PNR are traveling together by definition and should therefore be seated together to the greatest degree possible.

However, as long as the current system is in place, this is the only way you can expect to have a decent chance of sitting together on AC:

While I tend to agree with what the minister is suggesting here, ignorance of the current system shouldn't be an excuse for parents to throw tantrums onboard.