This attitude is one of the worst, most harmful things to come out of Silicon Valley tech culture.
There's a difference between doing this for a personal project, and doing this with a product that you expect other people to pay for...
It's just a harmless personal project.
I sincerely doubt that. Should you blindly apply it to everything? Of course not, nuance exists.
Apply it OP's project. The project is super cool, popular, and most of all it's done and it exists. The worst thing you can say about it is that it's not perfect and failed one weird purity test. Oh no, public audio gets sent to a server!