Did you enter "Mustafa Aksu" as the title of the Otter recording? If so, they just took the text you entered and emailed it to you. Why did you write this sensationalist article?
If they transcribed it and send it to you, maybe there's something here. But expecting Otter to be secure is an entirely different issue. But the article conflates this whole thing about the title with insecurity and it's unclear.
There is certainly an article to be written about the dangers of using Otter. But this stuff about the email and the title is a distraction. It attempts to "storify" something that doesn't need it. Automated recording means sending recordings to the cloud where you don't control them. That's a terrible idea for sensitive content. Full stop. That's the article.
Disclosure: have used Otter, like it, but wary of security issues. Self hosted option sounds good.