If you start at 25kg for OHP as an example, that means you are adding 10% each session... so yes I'd say that is too much.
If you change the rep range and can still progress next session/weekly then I'd still classify the person as a beginner.
I would argue that not being able to add weight by session/week is the definition of the transition from beginner > intermediate because you need more focused programming as gains don't come as easy.
Using lifts as a measuring stick can be murky at times as people aren't all the same. I am fine with the 140/100/180 norm, though, as it provides realistic targets if food intake etc is good.