The thread doesn't seem to be about the best goalscorers being the best finishers though, but that "finishing" isn't a skill.
Both positioning and finishing are important. I'd probably even accept the former as more important, because ultimately you can't score if you're not in a position to do so, but if you've got two players regularly getting into scoring positions, but one is better at finishing, he'll score more goals.
Your answer to my post was about the best goalscorers, here is what you said:
The best goalscorers are better at a) getting into positions to take shots and b) better at scoring from those shots.
Erling Haaland's shots per 90 since joining City have been 3.95 and 4.25. He scored 35 goals and 31 goals respectively.
Darwin Nunez's shots per 90 in those two seasons have been 4.44 and 4.77, and he scored 9 and 11 goals respectively.
The best goalscorers are the best at putting themselves in goalscoring positions but they are not better at scoring from these positions. That's statistically untrue, their goalscoring records are based on volume not quality of finishing.
Now earlier in the thread I stated that finishing was a thing but I added that finishing isn't what separates great goalscorers from the rest, it's the ability to be in goalscoring positions and should have added, volume shooting.
It's one of those things that is polluted by an ancestral wisdom that is wrong.