Except they were kind of right about laptops, most people have a full fledged laptop for 'big interaction', because the phone is fantastic and all, but when the interaction is too complicated, it's a nightmare.
In terms of 'AI' somehow displacing phones, it would only do so with some as-yet unseen AR glasses that could do the job without being hundreds of grams of gadgetry on your face, combined with maybe a smart ring to provide some sort of tactile feedback to 'virtual interfaces'.
This is all orthogonal to AI, AI isn't going to make a screen less desirable, whether on a phone or in glasses. If anything, AI makes some things demand screens even more. People don't want to *listen* to voicemail, they want to read a transcription because it is so much faster. Trying to 'skim' is only possible visually. People take voice feedback as a consolation prize, if they are driving or cannot actually look, or *maybe* for audiobook to enjoy the speaker's voice and casual pace for recreational story, but usually people want text to read for speed's sake. This is ignoring visuals which obviously demand screens.