It depends what you mean by "random" in this case. Things that would not be random include all-lowercase passwords drawn from personal things such as your name,

It depends what you mean by "random" in this case. Things that would not be random include all-lowercase passwords drawn from personal things such as your name, kid's names, etc - things that can be guessed/found through research. The long passphrase sentence you posted that happens to be all lower-case letters is seemingly random though.