Rock and roll (often written as rock & roll or rock 'n' roll) is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s,[1][2] primarily from a combination of the blues, country music, jazz [3] and gospel music.[4]
所以jazz是rock & roll的老祖宗之一，但“Jazz 也属于rock n roll”就纯属瞎扯了。你对这段文字的理解明显有误。由于这种误解，才会得出Louis Armstrong“是rock n roll 的乐手”的错误结论。你引的另一段：
The Rock and Roll Hall of Fame listed a song by Armstrong on the list of 500 songs that shaped Rock and Roll.
同样是在说明Louis Armstrong对后来出现的Rock and Roll有重大贡献，但这当然不能得出Louis Armstrong是rock n roll 的乐手的结论。他的West End Blues被列入摇滚名人堂，理由是“early influence”，史第夫也已经指出。这也再度证明上面说的前后传承关系。
先秦儒家思想是宋明理学的组成因子，但你不能因此就说孔子孟子都是理学家，其理至明。你犯的错便在于此。