The remaining 25% hide under the disguise of generic security "concern" that usually involves tangential topic.
Case in point:
A: WebUSB has privacy risk, it can fingerprint you.
B: But it already require user consent.
C: ProcesD to pontificate about good user consent UX.
Go make cool things. But you need to remember that thing you think is cool isn't safe for everyone to play with. Don't shove your trash onto others.