This sounds pedantic but they weren't voting on whether it was a red or not, they were voting on whether the VAR intervention was correct. And yes, for the record I think it makes very little difference here and I'm surprised it wasn't unanimously agreed as wrong. But I can only assume they disagreed on the basis of whether its 'clear and obvious red' as opposed to red card at all.
This sounds pedantic but they weren't voting on whether it was a red or not, they were voting on whether the VAR intervention was correct. And yes, for the record I think it makes very little difference here and I'm surprised it wasn't unanimously agreed as wrong. But I can only assume they disagreed on the basis of whether its 'clear and obvious red' as opposed to red card at all.