> 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.
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.
"Flat Earth is a cancerous echo chamber"
"As I grew older and became better at arguing, I learned to explain why universities teaching that the Earth is spherical are cancerous ideological echo chambers."
I only somewhat disagree with the post in the second part, with reasons enough to start the conversation.