Although I agree that there are awful programmes on, I think a total ban would be, how shall I put it, exaggerated.

put 是动词，意思是"表达、表述"，常用于表示用某种方式或措辞来表达想法或观点。 how shall I put it 是一个固定表达，意思是"我该怎么说呢"，用于说话人在思考如何委婉或恰当地表达某个观点时的插入语。