Sure. All people have their own opinions. Grouping people by a specific trait doesn’t give you a monolith that shares the same opinions on everything. There are Blacks, Latinos, Gays, and Trans for Trump.
The comment was refuting the insinuation in the headline that only young people feel this way because older people are stupid and awful. Somehow while trying to appear to be welcoming and not discriminate against minorities, the internet has become full of ageist discrimination. Age is another trait people can’t control or change. Discriminating or mocking people based on that is as wrong as doing the same based on skin color or sexuality.