What a sad sob story. It's so unfortunate for founders that they have to deal with such things as skepticism and preconceived notions.
How about this: if you care about my demographic of people, I'm happy to be appeased to in the form of commitments to have offline-only functionality for the hardware I'm paying for. But if you advertise the 1 millionth tech product and expect me to not assume it is like the 999,999 previous ones out of good faith alone, sorry, I'm fresh out of miniature violins.
I don't really want to be this flippant, but do you know how burned I am by this at this point? I've started returning things based on not being able to use them without an account. Just scroll through Google Home integrations some time and take a look at the vast mountains of internet of shit devices. Sometimes, it's proudly advertised that it needs a smartphone. Other times, you'd be hard pressed to know it even supports it, less requires it. Tooth brushes, bathroom scales, literally anything a Bluetooth radio will fit in.
If you want to be mad at anyone, don't get mad at me. Get mad at Juicero and all of the other folks dropping turds in the proverbial punchbowl. I am not sorry.