Thanks, I didn’t know that. For others also wondering how: https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-github-profile/managing-contribution-settings-on-your-profile/showing-your-private-contributions-and-achievements-on-your-profile

This is true for Android, but sadly not so for iOS. All browsers on iOS use Safari’s engine WebKit under the hood, yet only Safari can have extensions. There is no uBlock on Safari, either. We have alternatives though, like AdBlock Pro and similar