I think it's being downvoted because it comes over as uncharitable and even petty.

A computer scientist is one who practises and/or studies computer science, which she does. No, that doesn't require a CS degree, though it helps.

I think its overly charitable to call someone computer scientist because they write code. Feels very silly and fake, something done to boost up the credentials. sorry.

I mean, she wrote an O'Reilly book about microservice design. I don't think she's really hurting for credentials.

Have you looked at other people on the list.

Elected First female Chancellor of Germany vs wrote a book about microservices.

Yes hurting for credentials in this context. Most people have no idea who she is, her only claim to fame is writing that blogpost.

>call someone computer scientist because they write code

You're the only one doing this. The article omits any justification for the terms, sure. And it could be a baseless claim. But I don't really see any reason to assume that's the case.