We shouldn't be surprised. Lammy is a cabinet minister in a UK government. You're not going to get a different answer on this topic. Deselect him if you feel strongly otherwise. These people don't listen to anything else.

He's also a hardcore Christian. Listen to his views on assisted dying for example. Whilst still in opposition he was asked about this on Question Time not that long ago. When the topic via Esther Rantzen first came up. He said he would seek council from his constituency and then made it clear that it was his church constituency that he was referring to. Forget about the electorate. His head and heart is firmly aligned with what his congregation wants. I suspect on this matter it is much the same.

largely used when millions of people lost their lives in crises like Rwanda, the Second World War, the Holocaust, and the way that they are used now undermines the seriousness of that term

Nitpick, but Lammy said "the Second Word War and the Holocaust", the ways they've transribed it implies Lammy was saying the Second World War itself was a genocide.

Last summer, he referred to Azerbaijan’s bloody conquest of Nagorno-Karabakh, with the exodus of a terrified Armenian population, as "liberation".

Excuse me? That's actually disgraceful.

Longtime ago I had hope for Lammy, but he turned out to be duplicitous and fake .