If you compete against yourself, fine. I can’t understand that though. If I could be the best lifter in every room I walked into and every competition I went to for 5 years (or even a year), then, assuming the competitors included the best among humanity, …
This is where you’re failing to see the point. The “assuming the competitors included the best among humanity”.
StrengthDawg is talking about the concept between being the best when it may not really matter, and being able to best yourself consistently and improve. Being the best when it doesn’t matter, doesn’t matter. Beating your previous best does matter. One shows improvement while the other is irrelevant.
Your “I just want to win” fails for that reason. You’ll probably never be competing against the strongest men alive, and so it’s irrelevant whether you’re the best in any particular comp. Who cares when there are comps filled with people who are still significantly stronger than you out there?
Breaking PRs and getting stronger than you were previously is a much more sustainable and practical goal. If you keep it up, maybe one day you might be strong enough to compete with the strongest.