Yes, that's probably true. But the point I made a few pages back was that you can punch holes in the career of any bowler if you try hard enough. Therefore, I don't think that's it's fair to be overly picky, and its certainly not productive. I would rather concentrate on the good stuff and see how that totals up.
That said, I'm not sure why I don't rate Glenn McGrath's bowling as high as other people. I think that its probable something irrational like his lack of charisma, and the fact that I just don't find him exciting to watch. Yes, he's efficient as all get-up, but that just makes him the Ivan Llendl of bowling. I want to watch someone more akin to John McEnroe or Stephen Edberg. Or to use a soccer analogy, George Best rather than Stuart Pearce. So that'll be Barnes, Trueman, Lillee, or Imran, and probably Marshall.
I don't think that we can discount charisma when it comes to ranking fast bowlers, as strange and irrelevant as that sounds. After all, cricket is entertainment is it not? And fast bowlers are the leading act.