I love the imaginary world where people debate this based on hand waving and I suppose emotional feelings and how it literally contradicts recent memory[0]. The debate is over, just like for trickle-down economics because the results have long been in, so at this point the only reason I can surmise is people who make this argument are either ignorant or selective of the facts they use, are disingenuous, or are just too high on their own supply to really interrogate it.
[0] https://apnews.com/article/438fae12f9204b1fbd8e8b1985ae554f