That is a very ambiguous if not contradictory notion.

It  is clear many more people than anyone had suspected are suffering from some form of "gender dysphoria". Acknowledging that is one thing.

The bigger issue for many people is what that means in terms of the responsibility of society, particularly one that provides free health care.

Many physical conditions are not actually life-threatening or even impeding people in their daily lives, but "cause distress". Some of those we treat no questions asked, but others regarding appearance for example, are considered "frivolous" and "cosmetic surgery", and the individual must pay to "alleviate their distress". No one would seriously argue that being distressed by a big nose or wrinkles should be sufficient for treatment for those to be covered by our health system.

The argument for making gender "affirmation" surgery something insurance, public or private, pays for is that it is a medical condition.