A subset of power users want to their usage to be profiled (me, if I trust the company. Brave, Mozilla, Mullvad, 1Password, Bitwarden, Valve, companies like that). But most power users will not want that because of privacy worries.
From that you get two situations.
Opt-in:
- Regular users: click all 'ok' through setup at lightning speed, no telemetry enabled.
- Most power users: consciously don't check the box to opt-in because of privacy worries.
- Big picture power users: consciously check the opt-in box given they trust you (because they want their usage patterns to be profiled and optimized for).
Opt-out:
- Regular users: click all 'ok' through setup at lightning speed, telemetry enabled.
- Most power users: consciously check the box to opt-out because of privacy worries.
- Big picture power users: consciously don't check the opt-out box given they trust you (because they want their usage patterns to be profiled and optimized for).