In general not really, but I do understand why it's a bit underwhelming to buy the clock upfront.
With that said, the project is really cool and showcases the different watch faces well. For me that's the most interesting part, not how I construct a round LCD screen.
Given the current state of the Chrome family of browsers and the anti adblocker stance from Google, i'd think that alone would guarantee Firefox a steady user base.
Not sure how users cope with Chrome-based browsers and intrusive ads.
With that said, the project is really cool and showcases the different watch faces well. For me that's the most interesting part, not how I construct a round LCD screen.