I don't get what the big deal is about aging. Perhaps that's because I am decidedly in my mid-twenties, but I do not foresee myself becoming one of those 35-year-olds constantly complaining about being "old." My parents were never the type of people to lament that they were "so old" until recently, which makes sense because they're like 60 now. I think if you're twice the age of a 30-year-old, it's okay to call yourself old.
On the other hand, I was also around adults who have called themselves "old" even though they were 32 for much of my childhood (I grew up doing community theatre). The awkwardness of 13-year-old me reassuring my adult costars that they're "not old" had ensured I would never fish for compliments in that way, no matter how old I'd one day feel when compared to Gen Alpha. If you are pushing 30, over 30, or precisely 30 and are proud of it, these 30 memes might make you feel your age.