Average users don't even care about features, they use the browser they're given or the last one they were tricked into installing. None of the things in that

Average users don't even care about features, they use the browser they're given or the last one they were tricked into installing. None of the things in that list would need to be a concern of the average user if the right thing is the default. Nothing I suggested would stop that from being the case. In fact, most of those things are already being done right in Firefox, except the telemetry. Presenting the opt-in choice as a warm fuzzy sounding thing ("improve product", "speedy solutions", "Dark Web protection") to users that have no clue what it's about isn't really opt-in, it's just inducing a predictable fear-based response. Having a multi-step process to install an extension to turn those things on would be true opt-in. The average user would be too lazy to do it, the people that want it can have it, and those that explicitly don't want it, don't have to worry about it being inadvertently activated. Note, by "keep up with standards" I didn't mean be standards compliant at all cost, I meant implement new ones as they come up.