Important only which requests go out and to where. If tech data go to the company of the browser, it’s OK, but not if user data goes to Amazon, Alphabet, Facebook, Towerdata, etc., which has nothing to do with the functionality of the browser. Permissions can be restricted in the settings of the OS.
No, worse is not the amount, but where they are sent these telemetrias. A browser with a lot of features may have also a lot of tech telemetries related to these features to ensure a smooth operation. This is not the same as sending browserdata to third parties, like Facebook, Google, Amazon, etc. which has nothing to do with the browserfeatures but with logging and selling userdata. Even worse if you use above an search engine which logs your activity, like Google, Bing, Yahoo, etc.