Edit: FYI Dominic Cummings actually blogged about the important of Turkey to their success:
https://dominiccummings.com/2017/01/09/on-the-referendum-21-...
Rural Turkey has unemployment issue, but that's a separate matter to Turkish migrants to EU.
Turkish migration to EU is much more white collar, and urban.
P.S. The most hilarious rightist conspiracy theory I've heard of was that of Boris Johnson being a Turkish spy
Although unemployment was officially low, many in low end jobs felt that the huge influx of Eastern Europeans pushed wages down.
There is also the societal aspect of it because of the demographic change caused by a large influx of immigrants into an area.
Then, the prospect of Turkey joining the EU was raised, which would mean free movement for Turkish nationals and that scared people as well.
Brexit will simply make their position worse.
The North American trade bloc (NAFTA/USMCA) is actually slightly bigger by both GDP and population, though the EU is, yes, the UK’s biggest trade partner.
That's not a very convincing lever in a negotiation. The final relationship will benefit the EU far more than the UK, simply because of the balance of power, regardless of delusions to the contrary and empty bombast from Johnson.
A bill passed its 3rd reading in house of commons. It needs to get through the House of Lords. It still has some way before becoming law.
https://www.parliament.uk/about/how/laws/passage-bill/common...
And when the UK crashes out of EU with no deal we'll inevitably re-allow free movement of EU workers because we have no bargaining power.
Regarding your last sentence: leaving no-deal off the table, and this being unable to walk away, would have meant we have no bargaining power.
It’s incredible how many times people have cried wolf about this.
There's no version of the UK in 2022 that doesn't have freedom of movement for EU citizens.