There’s a sentence before that with a major detail you are ignoring.

Unfounded for the main cause, it’s still a cause of the amnesia.

See this quote further down…. You did actually read the article… yeah…? You aren’t just taking a quote of context and using that for the entire basis of your asinine argument… are you…?

But if there are significant memory gaps that may be related to childhood trauma—it may be time to seek support. A therapist is a great place to start. If you sense there's a medical issue causing your memory loss, give your doctor a call.

So yes, it is absolutely a cause as this proves without a doubt.