This is not quite so. In the absence of large unifying events, defining people by their generation is pretty inaccurate. Even younger people of the same age have different interests and values, and these further move apart as the years increase. This is before considering environment, childhood values, country of origin and residence, resources and aptitude. Taking a ten or twenty-five year tranche of people and expecting them to share similar worldviews is a big leap, and a lazy one.
Many people here understand this. Still, as an inaccurate shorthand it is one way to refer to a group of people. It is resented because the whole concept is inaccurate, and further laziness leads to ingrained stereotypes which are both inaccurate and frustrating for many, especially younger people typecast before they really have their voices heard or the power to make change. The natural tendencies of all people towards egotism come Into play, as do the biases where one sees one’s own actions and those of contemporaries in a more positive light. Older generations have always seen younger ones as some combination of lazy, arrogant, aloof, disrespectful and confusing. This persists though parenting has also changed a great deal in fifty years (or your preferred time period).
However, the term “Generation X” was specifically coined by Douglas Coupland in a book of the same name. His meaning was quite a bit more restrictive than its current usage. It was not merely a term coined by Boomers to emphasize their considerable braggadocio^, but coined by members who originally had McJobs and very different values, including more style (and cooler slang), more idealism and environmental consciousness than materialism (and sometimes limited choice in the matter - and so what has really changed between Generations X and Z excepting technology, though no one will admit this?). Who cares if Boomers have their own edition of Trivial Pursuit? Is it true children are always more like their grandparents or great-grandparents than their parents; or is it explosive to even compare “families” no longer “nuclear” nor so narrowly defined?
But treating real concerns and climate realities as trivial is a step too far. Every generation faces the problems and unforeseen consequences of their predecessors. Housing in the 1970s was tough for many when mortgage rates were 20%. This generation will muddle through as we all did. They’ll find answers. These will be imperfect and they will also pass problems along - it’s what we are best at. We are pretty good at solving them, very good at shifting responsibility and getting better at ignoring them, which is a mixed blessing at best.
^ Not you, of course, enlightened Boomer. I explained generational constructs are flawed. Just the ones shooting off their mouths. 
