I think the opposite - all of this is central to the subject of Brexit and at the core of what might come after
I don’t share your optimism re:Corbyn though I’m afraid - an isolated UK with a fucked economy & pitchforks out for anyone not waving the right flag is not ripe ground for a raft of progressive policy (not to mention the brain-drain to the EU that will occur because of it.
The absolute best I can hope for is that May/Tories faceplant so badly on Brexit that there is an early election, Corbyn comes to power on the promise of a 2nd ref on the final deal and the 2nd ref delivers a ‘let’s just revoke Article 50 & stay in the EU’ outcome. Then a full renationalisation & infrastructure investment programme in health, education, elderly care & transport
…and then I woke up