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 The experience on a phone cannot be evaluated apart from scrolling, so the first screen is not totally crucial. Different matter, however, for the desktop. 
 Really? If I see spam/low quality/ poorly executed or designed landing page I close a mobile page right away. 

@fiatjaf is the last desktop user remaining anyway, and he knows mobile rules over desktop 
 Really.
None of the proposed pages are low quality, so your this logic should not apply.
Users scroll to have a complete view of the page.