All loss of livelihood is tragic. I was born in a working class family and I remember people my family knew who suffered through the miners strike when I was a kid. Thankfully my dad wasn't a miner but that whole experience engrained it into me.
I have no doubt that people lost their jobs as result of the UK being in the EU. I also have no doubt that people have lost their jobs as a result of decisions made by our government. Now my question is, do I think it's right for anyone to turn around to them and say "It's alright, that's economics, we'll struggle for a bit but we'll be alright in the end."? Ofcourse not, I'd say it's equally arrogant and completely unacceptable. But just because people have lost their jobs already, doesn't mean it's ok to be indifferent towards people losing their jobs now.
What I would add aswell, the difference in this case is that people are about to lose their jobs as a direct result of all of us voting in a referendum. Not some EU faceless entity or the establishment in this country. So (and this may sound strong) I feel we are all directly responsible for what happens to people now. No NOT for them losing their jobs necessarily, but for the way we deal with them now. I fully accept the repurcussions of the referendum may well be that we will struggle for a while. But when I hear people talking about "struggling for a while" in such a nonchalent manner, to them it might mean cutting back on buying a new car, or on their weekly shopping bill, or being stung on their savings... and they'll ride that period out and hope for the best. But to those people I'm talking about, "struggling for a while" means a whole world of difference. And I just wish people wouldn't be so dismissive of what "struggling for a while" will mean for some.