When we say focal, it's the focus of the tag/signature. So in essence, multifocaled tags are distracting because your eyes flit from one place of the signature to another instead of gradually drawing your eyes to the rest of the art if you had a main focal.
For example, let's draw up the rule of thirds.
And applying this to one of your tag;
And as per the rule of thumb says, that the intersecting sections will be your source of focus on your composition, we assume that it would be around there where you choose a focal, in this case;
Your focal would be between the top and bottom right part of the signature as illustrated;
However the problem comes in when you have such a huge text coming off from the side, which imperceptibly creates another focal for your tag. And the distance from the focal to the second focal (which of course, creating a multi-focaled effect) given it's legnth, creates a distraction instead of a supplement for the eyes to roam more smoothly around your design.
However, one of the easiest fixes I've found for this is not being afraid to cover a bit of your tag/focal area with your text, and sometimes it even creates more impact on the design of the tag like so; (sorry for taking liberties into editing your work btw, I was hoping illustrations would give the lesson a better effect)
Like I said though, it's just a base principle and there would be instances where you can freely ignore them in lieu of following your creative instincts, but as a starting designer, I really do advice trying to start with basic principles and implementing them as they'll become second nature later on as you work through your designs.