Comment by contrast

"You're asserting that everyone is using it wrong. It's your personal opinion, and a baseless one at that"

Their comment does not assert that. They are responding to someone else's assertion, and turning it around to make a completely different point. It's a common form of argument - "if you're saying that the problem is everyone's getting it wrong, then I disagree and the problem must be something else."

Basically the exact same point that you are using to launch a stream of insults!

Saying that it is "silly", "detached from reality" and "delusional" for making assumptions about folk is the most incredible self-own.