It seems that the current narrative is that people who vote for a party must support all their policies.
I voted Labour. I don't support Brexit but it's not the key issue for me. There were other more important issues to me and Brexit wasn't a vital issue. But it's being framed as people who voted Labour or Conservative supported Brexit because these parties support Brexit.
I am sure that some people who voted for other parties don't agree with all their policies.
If Brexit and Remaining was important to me, I would have voted Lib Dem.