I could imagine that writing like this could make you remember more because you need to pay more attention.
To me it looks kind of like if someone wrote something with a normal font and then went over it with an eraser. It somehow makes it more interesting.
Just tried it. It’s like my brain wants to complete the missing parts while reading. I can definitely see how that would make me remember more. Often when I read a sentence, I’m in “autopilot” and forget what I just read. I think that font could prevent me from going into “autopilot” when reading.