It's a fair point, but regardless, any crypto with a nominal fee instead of % has a huge flaw, as it can grow beyond mainstream transaction budget easily.
Trying to make the nominal transaction fee smaller is a huge hit to all the miners, and another step backwards into the problem. Anything that has value and is transact-able should be calculated in %. IT just scales, and it's how society works. We have not reached so far by taxing nominally.
Everything else is a trap in the long run imho.