EU is much more than a trading union, to these people EU represents giving up on the sovereignity of your nation. I have not read that anybody would be opposed to trading. They were and are opposed to giving up on sovereignity, and against the laws passed as a consequence of that, but not against trading with other EU countries.
There are other trading unions and agreements that are possible besides EU, and it seems like EU has prevented UK from re-establishing the trading unions and agreements it had prior to joining the EU.
We can only speculate why, but it seems plausible and rational that EU is doing this as kind of a punishment and warning to other nations considering leaving the EU. UK benefits more from these agreements, while EU benefits less from these agreements.
On the other hand, EU is under an existential threat, and will disintegrate if other nations follow Brexit. So it is kind of rational (albeit only for the short term) for the EU leaders to think that EU benefits from preventing these agreements from happening if it prevents or hinders the disintegration.
There are other trading unions and agreements that are possible besides EU, and it seems like EU has prevented UK from re-establishing the trading unions and agreements it had prior to joining the EU.
We can only speculate why, but it seems plausible and rational that EU is doing this as kind of a punishment and warning to other nations considering leaving the EU. UK benefits more from these agreements, while EU benefits less from these agreements.
On the other hand, EU is under an existential threat, and will disintegrate if other nations follow Brexit. So it is kind of rational (albeit only for the short term) for the EU leaders to think that EU benefits from preventing these agreements from happening if it prevents or hinders the disintegration.