I think you misinterpret. Everyone has always hated the boomers. The Silent and Golden generations called them the “Me Generation” because they were thought to be horrifically selfish people. Gen Xers (I’m transitional between Gen X and Millenial) had to suffer their intolerance and lack of awareness that the world had changed since they were in high school. My own parents worked part time at Sears making minimum wage and were able to afford an apartment with roommates and all of their college tuition and expenses. The very week I graduated high school, my parents demandeed that I pay rent, even though they had literally done nothing to help me prepare for anything more than just a minimum wage job in the suburbs–that’s the sort of people they were–they really believed that nothing had changed since 1975. Then Baby Boomers began to constantly insult and demean Millenials–for not having cars and houses, fewer children, and obviously avocado toast somehow without understanding that Boomers are the cause of all of this.
So yes, you’re a Zoomer and are lucky that Boomers for you will always be grandparent types. The rest of us suffered their generational narcissism.
In regards to your comment on aging, I fully agree. You can age without getting old. Being old is a mindset more than anything.