Focus your anger at the source of the problem - which is rising inequality and uncertainty caused by a tiny minority of incredibly wealthy people, who have control over a huge proportion of assets.
Consequently they can set the agenda, essentially behave however they want and governments pander to them. A good example is Vodafone being let off a tax bill by HMRC of approx £7bn. Yes really: Seven BILLION pounds. Would you or I get let off paying our tax if we made a mistake on a self-assessment?
Yes there are some older people who are ignorant of some of the struggles that younger people face today. But there are ignorant people in every generation. A few people voicing nonsense does not make them the spokespeople for the entirety of their peer group! Every generation had its struggles:
My Grandma - born in 1905. Was one of 13 and lived in a slum. Worked as a flower girl on the streets at age 8. Pulled herself up by her bootstraps and ended up running a cafe as her own business, which enabled her to buy a small house - that she lived in until the day she died.
My Mum - born postwar and therefore a "boomer". Is disabled, in extremely poor health and reliant upon benefits. Lost everything due to Black Wednesday and the crash - where interest rates went up to 15% and people's businesses were going bust and there were repossessions everywhere because people literally couldn't afford to keep going. Had to stop work when she was pregnant with me (70s) as pregnant women weren't allowed to keep doing the job that she had at the time.
Me - born at the very end of the 70s, so just outside of the millenial age range. Left home with very little (see above for reasons why!). Now own my own home (mortgaged), good job, pension nothing to write home about. Worked two jobs to afford the deposit for the house - and moved counties to buy where I could afford. Started as an apprentice trainee in my industry and worked my way up. Pension is not final salary. My sister is a millenial, owns her own home and plenty of her peers do as well. They've done what I did which is move to where they can afford and adjust their expectations in terms of what their buying power will give them.
So I'm currently better off than both my Mum and my Grandma were. I have a nicer house, better job security and terms and conditions. If I were to have DC I'd have maternity pay and rights. Looking at the three generations in my family, is the "boomer" really at fault?
It's facile and reductive to try and pin the entirety of the problem on a single generation.