No betrayal. Neil wrote a song about certain aspects of Alabama (and and an Alabama that doesn't exist anymore) that was far from flattering, and Skynyrd responded with "Sweet Home." Two great songs, two legendary (and class) acts. .....And they remained friends throughout. People try to make a much bigger deal out of it than it was, as if they were bitter enemies.
Songs and songwriting are far more simple "wordplay" than some reflection of the singer's real life for the most part. Sometimes I wonder if people really believe that Johnny Cash actually "shot a man in Reno just to watch him die". Singers and songwriters get into a role just as an actor does for the purpose of presenting a point of view that isn't always their own. Young, for example, also wrote one of Waylon's great hits, "Are You Ready for the Country?", so these guys can be all over the map.
I also understand that Young and his long-term wife have an autistic child to whom they are devoted and caring. "Long-term wife" and "devoted to his children" (as well as loyal to his friends) are enough for me to be inclined to look at this guy more positively than the content of all his songs.