Sorry, not getting what you are saying here. The article draws the equivalence. I am merely pointing that out. Your statement has no similar context.
Appeasement is shorthand for a position on an issue, i.e. that we should not to go War with Germany in the 1930's.
Here is the headline of the article:-
On Brexit, as on appeasement, the CBI gets the big decisions wrong.
So your statement 'Brexit is appeasement' is nonsense.
Its effectively saving 'being pro-remain is the same as not wanting to go to war with Germany in the 1930's' they are separate issues how can they be the same?
I could equally say the CBI was for the Euro so all pro-remain are for the Euro, which clearly they are not.