A question about DBZ?

Well...I don't disagree with you. You are absolutely right. The people that suggest that Goku takes half an episode to power up are just plain stupid and obviously haven't watched DBZ. The only times he takes a while to power up is when he is achieving a new level of power but against those opponents you mentioned, that's not going to matter as Goku at base is WAY more than enough to beat all those characters you mentioned. The people that suggest otherwise are just fanboys to the max and DBZ haters.