Yes but - objectively - they are the generation that had the best chances in life. The war was over, they had the NHS, free university education for the really clever ones, good job opportunities for everyone else, decent pensions and the ability to buy their own homes.
There are winners and losers in every generation, but, objectively, by almost any measurable criteria, as a generation they were extremely lucky to be born when they were.
My mum is about to turn 60 and she was 15 when we joined the EEC. Even someone who is 70 now would have been 25 when we joined, meaning that they benefited from the huge economic growth we enjoyed due to our membership for almost their entire careers.
I'm 32 and graduated into the financial crisis. I was lucky enough to already have a job lined up when the shit really hit the fan, and I have done pretty well, but salaries have been stagnant and the cost of living has shot up. The cost of housing in particular is ridiculous - fuelled in part by the baby boomers wanting to supplement their final salary pensions (that we will never have) with a nice little buy-to-let or two (when we struggle to afford even a modest home just to live in). I am very very very much one of the lucky ones in my generation, and yet I will never be as well off as my parents.
The generation you are talking about had all those advantages, and then they went and voted for Brexit, which the younger generations overwhelmingly didn't want. The younger generations will now have to pay for it and suffer through the economic and political fallout and reduced prosperity to follow.
So I'm sorry, I just don't buy this whole "older people remember what it was like before the EU and it was better".
They don't remember it that well (unless they are very old), it wasn't better, and I don't really see why we should have to listen to them and "respect our elders" when so many of them seem to be really quite stupid and selfish and entitled.