It is only anti-Brexit because it is pro-business.
We do not all think we need to capitulate to EU demands, especially when there seems no foundation of how a proposed figure might come from, your position is clear, but I suspect that as negoriations go forward there will be a firming up of feeling that the EU's demands are unreasonable, if they are indeed unreasonable.
You will no doubt cite that it is the UK that is unreasonable for voting to Leave, this is where we are different and on different sides of the fence.
https://www.youtube.com/watch?v=0nS-lGShvF8