This is an interesting one because it mirrors a general change around how we view normal human biological processes.
It relates to what Mary Harrington talks about when she says we are now in a transhumanist era.
Previously, people just generally accepted normal human biological processes as natural, even if they were not always comfortable. They weren't problems to be fixed, but instead part of human life: going through adolescence and getting used to the bodily and social changes there, becoming a mother with pregnancy and breastfeeding (or a father, though that's less physically instantiated.) Loss of fertility and often sex drive, the decline of muscle mass, hair turning grey, baldness, wrinkles,and eventually death.
People would try and mitigate some of these things, including with medicine, but the framing of them was that they are part of the natural life cycle.
This has really changed now, we now tend to think, well, this is an uncomfortable change, what can medicine do to stop it, or disguise it, or prevent it. Many people use cosmetic procedures, including non-invasive ones like hair dye, to disguise the normal effects of age. Lets replace those hormones which are now in natural decline. Loss of sexual virility in old age is seen as something like a disease process rather than as normal and natural.
From this perspective it makes sense that adolescents now think the normal physical and psychological pains of puberty are some kind of disease that needs to be treated medically and avoided, rather than seeing it as a growth process.
Interestingly I saw an article a while ago about a similar change in the approach of public health bodies to disease and their own role over the last 30 years or so.
And of course, when people are told that certain things are not normal, they do feel differently about them. It doesn't mean they aren't hard when people see them as part of a natural process. But people do feel very differently when something is framed as a disease process, or "wrong" rather than as just something everyone goes through. We can see that with the number of kids now who are feeling that puberty is something to be fixed and very scary.