Telemetry was added to create an aggregate count of searches by category to broadly inform search feature development. These categories are based on 20 high-level content types, such as "sports,” "business," and "travel". This data will not be associated with specific users and will be collected using OHTTP to remove IP addresses as potentially identifying metadata. No profiling will be performed, and no data will be shared with third parties. (read more)
The Copy Without Site Tracking option can now remove parameters from nested URLs. It also includes expanded support for blocking over 300 tracking parameters from copied links, including those from major shopping websites. Keep those trackers away when sharing links!
For anyone wondering, it's controlled by the existing top-level Send Technical And Interaction Data toggle in the privacy menu that's been there for ages, so most users who care about privacy have probably already opted out.
If it's optional it should be disabled by default. 99% of people aren't going to even know this is a setting or something that's going on behind the scenes
Telemetry is important for prioritizing feature development and support for the silent majority of users that don't disable it and then complain about ALSA support being dropped.
There are ways to prioritise feature development that don't involve telemetry and I'd even say they are better than telemetry. For instance, surveys, user interviews, usability tests and that sort of thing.
Being real here? Anyone that can't see the damn button for it during initial setup isn't going to give a damn.
Best practices? No. Opt in only should be the default. But that's still about choice, not whether or not telemetry is inherently a bad thing. But if someone is too damn lazy to look at the settings of a program when they first use it, that's pretty damn stupid. But, hey, people in general are stupid.
There's no "initial button". Installing Firefox on mobile you'll have technical data collection, marketing (with a third party) data collection, and "random studies" enabled without a clue. As someone that is very wary of this, I can assure you that at no point I was asked anything about sending data to "Adjust" (marketing partner), Mozilla, or allowing random, unknown at the time, studies.