https://x.com/SenLcummis

It is a gold account tied to a company called "EdgeCortix"

EdgeCortix appears legit (linked in profile: https://www.linkedin.com/company/edgecortix/) , but there is a fake account also calling itself EdgeCortix that has added these fake accounts as affiliates:

https://x.com/edgecortixAI/affiliates

What happened here? Did someone try to register Twitter Gold on behalf of a fake EdgeCortix, or was EdgeCortix hacked?

Not a surprise Twitter Gold is being abused by scammers.