That's an assumption and not necessarily true. Some users may read it, some may skim, some may come to the page already convinced. For those latter groups, having a fast lane/shortcut call-to-action visible someplace like the top gives them a way to get started before they get overwhelmed/distracted and potentially leave.
that's the kind of attitude that makes otherwise successful apps/content/etc created by stiff engineer minds to never experience any success: "they didn't want it anyway", when people literally didn't _understand_ what you were trying to sell.
