Back in April 2021, another study using >100,000 US Veterans Administration patients over 6 years found the same effect and effect size (42%) for Tdap vaccination.
They then checked a completely disjoint population, in a different health-care system, and got the same number.
I went out and got an over-the-counter Tdap vaccination at a local pharmacy, because how good does your reason for a vaccine booster need to be?