That’s the beauty of this process from a patent troll perspective. It is expedited, and therefore can’t be blocked by having a proper review that could invalidate the patent.
I know you didn't draw the connection explicitly, but I just wanted to point out that in this particular case, Masimo isn't a patent troll - they're a company that sells actual devices - https://www.masimopersonalhealth.com and is listed on the NASDAQ with market cap of $6 billion.
What does expressing their legal rights / etc have to do with morality?