> isolating themselves & having their [...] views spread far and wide
> most cancerous developments & the less contentious it becomes
Your comment complains that people cannot articulate their reasons, while making a sweeping, emotionally loaded claim whose reasons are themselves barely articulated.
That doesn't read as a complaint, it's a realization, and the argument is articulated enough.
Are you challenging the idea that echo chambers facilited by modern tech are harmful, or that people get better at expressing themselves as they get older? From here it looks like you're doing neither, just taking a stab at the comment's author.
That's how claims work. Why would I argue against nobody? Happy to engage if you disagree with the claim.
I only somewhat disagree with the post in the second part, with reasons enough to start the conversation.