but they can also take what they've saved and go back home where it's worth a lot more
How much do you think a Pole can save on minimum wage when they have British living costs to pay? My guess is approximately enough to pay for their travel back home, their living costs in Poland over winter, and return fare for spring. Seems like fun. I could actually understand that if their winter was mild and ours was brutal, but the reverse is true. To put it simply, it makes much more sense to stay here and claim benefits if they fail to find winter work.

I personally think it's irrelevant what they do because either way they won't be coming this year because of Brexit.
Well, any that go home for winter will have problems, sure. But those who are already settled here won't. Do you have any statistics that indicate how many Poles only come to the UK for seasonal work and return home for winter? I think it's a ludicrously low percentage.

More fallout. Northern Ireland seeing riots.
Fun fact - Northern Ireland has seen riots while we were a member state of the EU.

I saw someone on Twitter saying that Brexit voters are responsible for what's happening in NI. What was really fucking funny was that this woman had a Scotland flag and #SNP in her bio. So I asked her if Scotland leave the UK, and unionists cause trouble, is that her fault? She blocked me.

What's happening in NI has been brewing for a long, long time. Brexit is a factor, but it's not the cause. British colonialism in Ireland is the cause.