Buddhism is not a philosophy based on a magic book or some unprovable god; it’s just people. The Buddha was a normal person, and absolutely could and did make the kinds of mistakes common in his time.
I don’t think that stops it being useful, personally.
I think it depends on your particular fork of Buddhism. It's a pretty open source religion, and some sects and scriptures are more devout to tradition and mysticism than others.
We do not care at all.
Buddhism is not a philosophy based on a magic book or some unprovable god; it’s just people. The Buddha was a normal person, and absolutely could and did make the kinds of mistakes common in his time.
I don’t think that stops it being useful, personally.