The nook can also adjust font size. I embiggen the type when it’s late and my eyes are tired.
And going to an ereader will vastly increase your title choices if you need larger print, because of that feature.
I don’t know of any device or internet-based e-readers that do not allow type size enlargement. If you find such a one, then it might be valuable simply on account of its rarity / antiquity, if not its utility.