Arguably, we all benefit when companies that break the law face consequences for breaking the law.
There are other pedometers, heart rate sensors, fall sensors, etc. There is no reason people who were in the market for such products have to buy Apple Watches. They can get other brands. If you think that it's a tragedy that Apple couldn't maximally capitalize on the New Years resolution surge in interest in health, take heart that other companies that did not apparently flagrantly violate the law are picking up the slack.
I have one of the infringing devices, and the blood oxygen feature is not a useful one for me. It adds nothing to my life, despite my zeal for quantifying everything. This is due partly to the inaccuracy of the sensor and partly because I don't have a relevant health condition. For someone who has a medical condition that could use such monitoring, there are probably better solutions that are actually fit for purpose. I'll keep wearing the watch for its other functions, but I hope that by the time I want a new revision of smart watch, Apple has changed their behavior and goes back to being a better corporate citizen that doesn't infringe patents and poach employees just because they don't like the deal that Masimo put on the table (or whatever their justification was). Otherwise, I'll just buy the competition or do without.