It seems patronising to Americans. They even renamed The Philosophers’ Stone to The Sorcerors’ Stone because they thought ‘philosopher’ was too complicated.

It's called "localization" and it's done to make the book more accessible for people unfamiliar with foreign spellings and phrases.

In the case of HP1, the title difference was based on the perception that the alchemical reference in the original title would be less evocative in the American youth market and “sorceror’s stone” would convey the intended idea better to that audience due to cultural difference. I don't know if test marketing or focus groups were involved in that judgement, but I wouldn't be surprised.