I think it probably will, but I'm not sure, and I certainly don't know how. That's why I asked.
I am very interested in hearing about the concrete manifestations of policy changes on economic activity, public health, national security, the environment, etc. I honestly have no idea what the implications of a Brexit will be with regard to these things.
In politics, though, such discussion is often drowned out by people's quests to self-identify as whatever kind of person (eg. liberal) and make note of cultural differences between themselves and the opposition (how they're uneducated or xenophobic or not globally-minded, in this case).
The GP seems confident that a Brexit is an extremely bad thing. I have no a priori reason to suppose otherwise, but it would be a lot more useful if they would explain what negative consequences they foresee.
For one, and by definition, broken agreements and extra burden to paimfully craft new ones. Work duplication. Petty fighting for minute details with each potential partner.
Next, broken trust. We have spent years negotiating with the UK, accedimg to ever increasing demands, accepting expansion of the EU to the east at your behest (and then complaining about too many poles), etc. Luckily we did mot accept Turkey (which I actually supported, but in the current situation would have been a further destabilizing factor) at your (and USA's) behest.
And now you quit. You shatter all we have built together. Not nice. Resentiment is bound to take hold of lots of europeans against britons. I for one do not welcome you anymore. I hope all agreements with the UK are declared void, students are not accepted in university exchange programs, that you have to pass screening processes (like all mon-EU people have) to enter and set shop in any EU country, that you have to prove cultural and language integration whenever you decide to permanently move to another EU country, that you are only allowed to move if you have a work permit and a work offer, etc.
In short, the EU should put back all red tape that belongs to any non-EU member. And each piece of red tape will be romeved, or not, after long negotiations, which the EU will agressively stear to defend our interests.
Is this retaliation? At all! YOU have decided this. The club you are leaving is all that, and much more. You are leaving ALL that behind.
Will this happen? Is this in the EU's interest? You bet. Maybe not strictly in our economic interest, but defenitely in a political sense.
We have been dealt an existential threat, and we need to show the remaining 27 members how cold it is outside.
The reactions of EU polititians have been cristal clear: we are cutting ties with the UK, fast and furious.
Boris can pretend to continue to be european, but we will not necessarily welcome it.