I personally think (and hope) the ever-growing issues surrounding data privacy and the constant stream of data breaches we hear about will push people to demand solutions like this and embrace the tradeoff that comes with it. Hope we get more people using password managers. Hope we get more people thinking more deeply about how they can protect their data.
Time will tell what the people want! :)
That's my idealistic way of looking at it. Practically speaking, the burden on developers to adhere to GDPR and other data privacy laws is quite high. You can use this service to store sensitive user data and relax :)