There's no chance in hell that Turkey will be able to join the EU and the chance is decreasing rapidly.
Exactly. Turkey has been pushing to join the EU for decades now, and it has (of its own- or rather of Erdogan's- own volition) been moving further away from meeting the requirements to join.
Even a few years ago, before things got this bad, it was generally seen as clear that Erdogan was not interested in joining the EU- let alone meeting the conditions for membership- but only in exploiting it for political capital... particularly when they were rejected so he could blame them for anti-Muslim bias, say they had no intention of letting them in in the first place, and use it as an excuse to bolster his own autocratic regime.
It'll also be noted how Erdogan exploited the Syrian refugee crisis in an attempt to extort concessions from the EU by threatening non-cooperation and effectively swamping the EU with refugees coming via Turkey. With freedom of speech- let alone expression- being cracked down on to the current extent, with the state shamelessly exploiting its power to push its own message while persecuting and suppressing any opposition, Turkey has- like Russia- become a mockery of a democracy.
Erdogan got his way- regardless of whether the Turks themselves are decent people, this is not a country- in anything like its current state- it would be acceptable or remotely workable to have within the EU. But then, there was never a cat's chance in hell of this happening anyway (and now it's more like a snowman's chance).
If I'd thought there was *anything* like a realistic prospect of Erdogan's Turkey being allowed to join the EU, there's no way I'd have voted "Remain". (Spoiler; I voted "Remain".)
Of course, that didn't stop self-serving scum like Boris Johnson- the guy who shifted his allegiance to improve his own prospects of becoming Prime Minister- using this as a scaremongering tactic to promote the Leave case, and in an utterly shameless display of hypocrisy, once they'd won, saying they were going to help Turkey join the EU. What a piece of shit.