I think it should not apply to sky priority / pre-check. Even in SEA where security lines got out of control in the last few months, it was never more than 30 minutes in priority or TSA pre-check lines.
I consider myself lucky, but I rarely arrive more than 1 hour before international and 45-50 minutes before domestic flight. I never missed a flight. I know that statistically I will miss a flight sometime in the future, but because it will be one out of 10s or 100s of flights, the extra delay and expense of one missed flight still well worth hours saved on other flights.
If I have time for the lounge, I take a note that I arrived too early.