Hah, so MariaDB was created because the creator of MySQL got pissed about the acquisition by Sun/Oracle, and now MariaDB might be acquired as well? Making bank while forking their project over and over isn't a bad way to make a living it seems.
Technically, I think anyone can make an offer on any company operating in their legal jurisdiction, and that would compel the company receiving the offer to publish an equivalent press release.
I don’t blame them for having nothing to add at this time other than “here is the legally required declaration, please wait”. Even a flat refusal takes time to prepare, in order to meet all the necessary legal forms.
(This is not legal advice, please consult a legal professional regarding the validity of these statements in your jurisdiction(s), etc.)