Is it for kids? yes
Can adults still try and enjoy it? Definitely
Is it good? Absolutely
People who hate the show simply do not want star wars to be any different from what they grew up watching, they do not welcome new ideas, as simple as that. Some people also seem to hate the show due to factors such as diversity and lgbtqa characters. Above all, I don't see why adults are crying over a show that's made for kids. If it doesn't cater to you then don't watch, simple.