This is not legal advice, I think people often misunderstand the parameters of defamation, and how it works.
As an example – you cannot defame a company.
I don’t know if you are being vexatious or not, but in the general scheme of things, does it matter? Do you think the general public is accessing the information? All sorts of things are stated in defence responses, and the word vexatious is very common. The key thing is if any ruling is in your favour.