Mr Duesmann told the Financial Times carmakers had been caught by surprise.
A Mondelez spokesman said: "We recognise and will abide by the ASA's decision but we are disappointed by the ruling. It was aimed at adults (parents) rather than young children and was deliberately scheduled away from programming likely to appeal to children under 16....
"We are frustrated by the Federal Aviation Administration's inability to do what nearly 40 countries have done, which is to safely deploy 5G technology without disrupting aviation services, and we urge it do so in a timely manner," the firm said in a statement.
"Let's be honest, nobody, nobody cares about what's happening to the Uyghurs, okay? You bring it up because you really care. And I think that's really nice that you care but .... The rest of us don't care. I'm just telling you a very hard truth," he said.