Earlier quoted context omitted.
What does 'annual plan' mean to you? How can you misinterpret those words?
I would probably understand it, but I don't think those two words would necessarily make it clear to every person of every background, and it's very easy for Adobe to briefly explain the early termination fee on the payment page where everyone can easily see it. They don't explain it because they want everyone to convert, even people who did not understand what they signed up for and would not have signed up if they…
Being charitable, I would guess that they don't explain it because it seems like plain language and should be understandable.