Earlier quoted context omitted.
Zero telemetry and fastest aren't unique features (assuming that fastest is not notably true, since every browser seems to be the fastest in some benchmark or another). Supporting both Chrome and Firefox extensions may be, but that seems like a very small niche?
Perhaps, but it is the only browser in the known universe that runs Chrome and Firefox web extensions on iOS, which is on billion devices. Zero telemetry may not be a unique feature to you, but if you care about having a privacy respecting browser it certainly is. If a browser has telemetry, which almost every other browser has, it is not privacy respecting by definition.
> Zero telemetry may not be a unique feature to you
Unique does not mean important. It means hard to find elsewhere. There are lots of browsers that have zero telemetry. Adding another one doesn't stand out. It can be an important feature of a browser but it alone won't bring many people to a new browser when they can get it elsewhere in a more established product.