It's a valid concern to not want to give a random website a workable voice model. Just because you've talked on the phone or used speech-to-text before, doesn't make that concern invalid.
Upon reflection, I'm not so sure that our usage of our voice in real life can be dismissed so easily as a concern, even if the comment was intended to dismiss concerns about this website.
Probably the folks who could best use this nefariously are the folks we already know, who have much greater availability to our voice. Those folks are in the best situation to capitalize on a working voice model to, say, call our manager, bank branch, or local emergency operator. A random website would have to go to some effort to accumulate the needed information to use our voice for much, whereas someone who already knows us could have us fired for the contents of a phone call to the manager, up on charges for prank-calling 911, or worse.
But this website is not even asking for identifying information..
yes it could figure things out, but as privacy conscious HN readers we have VPNs and such right? =p
Just need a facebook pixel or a google font? Some company (already known for dark practices) could hide behind a "random website" to get more data. /conspiracy
And if they are using other techniques like browser fingerprinting or other techniques big tech uses to de-anonymize users then suddenly they have something to tie your voice to. Maybe the risk is low but I prefer to error on the side of caution.
It's a valid concern to not want to give a random website a workable voice model. Just because you've talked on the phone or used speech-to-text before, doesn't make that concern invalid.