I wouldn't count on it. Keep in mind, none of us have pre-check. However, several years ago, our extended family of six...four generations....flew to Florida for a cruise. We were all on one reservation on Southwest, except for my 77-year-old mother-in-law. Since she was flying on a seniors fare, she had to go on a different reservation.
The five of us on the first reservation (oldest was me, at 59) all got the pre-check.
My MIL did not. And she needed it the most.
At least, since she was over 75, she didn't have to take off her shoes.