I love the idea of Liquid Mode, and I can see it being a huge asset to those who have certain accessibility requirements. Indeed, I'd love to recommend it to some of my customers (local authority).
But the requirement to have an adobe account in order to use liquid mode is absurd, especially when acrobat reader is free to use and can view pdfs without requiring an account. This would be very off-putting to many people who don't have an account or don't want to sign up. Therefore, I can't recommend it as an accessibility solution.
I realise this is likely due to needing cloud access to do the liquid mode processing, but surely there's a way to do this without needing people to sign up!