Btw, I just logged in to test fire resist tapes. You are wrong. They DO work.
Me and Windmaster just tested with +22 in FR tapes. It dropped a fire dot from 269 to 203. Almost a 22% reduction.
We tried to test using Trimpian but it kinda got messed up a little. So I can't make a definitive comment regarding Trimpian just yet.
But I can say with 100% certainty that fire resist tapes do work. I'm assuming that +25 in tapes will equate to a 25% DoT reduction since +22 reduced it by 22%.