We’re talking about an Israeli, not a Jew. One who has a prominent role in the cultural life of that country. As a “liberal”, I would not have had an issue with questions being asked if some high profile Saudis were invited to a festival in October 2001.

It’s pretty immoral in the current day and age, but it is something that should be made (near) impossible with better regulation until it can be done with a reasonable carbon cost

I knew it sounded familiar. It even has a name and a wikipedia article https://en.m.wikipedia.org/wiki/Planck’s_principle