They said as much in an email to subscribers of the service (of which I am one.) That said, I do understand there will be skepticism around the nature and timing of pulling the fleet. They did send out a survey in October of 2018 asking for feedback on the e-bikes and I do specifically remember a question asking if respondents would be willing to pay more for e-bike access. Take that for what you will.
Was that actually confirmed or just alleged?