And to be fair, there are certainly sources from within the Islamic tradition in which Muhammad behaved pretty nicely. Without getting into the debate about whether or not these things are unique to him, teachings like “spread peace, give out food, and pray at night while people are asleep” are pretty good. So are things like, “make things easy and don’t make them difficult,” or, “a smile in your brother’s face is a form of charity." Etc.
To me actions speak louder than words, any dictator can preach about feeding the poor and supporting the common man, and most have. It’s hypocritical for Muhammad to talk about spreading peace and freeing slaves whilst also attacking other communities and taking people away as slaves, or to say “to me my religion, to you yours” and then smashing up their religious symbols.