EASA offered membership to the UK without voting rights but with ECJ jurisdiction for disputes ( like Switzerland / Iceland / Liechtenstein ) but refused.
Correct - The ECJ has intervened in only one aviation case in 38 years but this was the main reason that pilots were sacrificed to the Brexit Gods. Ideology, pure and simple. But as we keep being reminded - it's what people voted for.
As a personal perspective, I can count on one hand the number of colleagues I've met in the last 6 years or so who haven't been pro-Brexit, usually in an extreme way. Maybe I was unlucky, but it seems hard now to have sympathy despite the huge disadvantage this has caused me personally. I've already lost one job offer because of it. What a ludicrous mess, but remember as someone already mentioned : "get over it, you won".