Why write like this? This is what sick internet communities look like. Mocking people for their account age, advocating for hating people for the sin of being addicted to social media. This is antisocial behavior, and we should do everything in our power to eject it from the small remaining pockets of sanity on the internet.
Someone hurt this person, I suspect. And it has left them bitter, resentful, and angry at anything that gets in their path.
They probably don't like that someone is challenging their ability to be neighborly, follow the golden rule, etc. because it conflicts with their mental model of themself.
I hope someday they will introspect and realize that we are all humans, and all humans deserve wellbeing, even those whose choices, opinions, or situation we disagree with or find unpleasant.