Taking nationalist opinions aside, FOS is a much better song than GSTQ. It's not the best but it's certainly a better song.
Billy Connolly said it better about GSTQ and other anthems (skip to 1:15 onwards if some people are easily triggered) :
It is a terribly boring song
While I have to agree with you that GSTQ is a boring dirge, and also that there is nothing
wrong with FOS, after the ill judged "jokes" that the alleged Scots comic Connolly came
out with about beheading engineer Kenneth Bigley, I wouldn't urinate on him if he was alight.