If you don't like pills, there's also powder, drops etc. that you can take instead and which you can also add to your food or drinks. There's also vegan milk alternatives and convenience food that already has B12 included.
If I wanted to supply my needs with algae only, I'd probably also want them in a powdered form or similar as fresh algae - even if refrigerated - turn bad pretty quickly.
Don't get me wrong, I'm happy if they invented another vegan source for B12, I just don't see the huge difference or advantage compared to status quo.