have certain moves that are travels. Carmelo Anthony used to do a spin (and probably still does) but it is a travel on every level (except the NBA apparently). Giannis took 6 steps in the last round and wasn't called. The fact that certain teams go from 65% playoff win percentage to 20% with one official is a travesty. The fact that Nikola Jokic spent his first 5 years in the league and was only ever ejected by one official, but that happened a half dozen times is a travesty.
It is a hard sport to officiate. I am OK with a ref saying it looked like a foul when the replay shows he missed it. That happens. But at least we will get an answer. Often times we don't.