Whitepapers have proven very effective for marketing and promoting cryptocurrencies. When Bitcoin launched originally in 2008, it was marketed through a whitepaper that was supposedly written by Satoshi Nakamoto.
Since then, almost every project has been introduced in the market with a whitepaper of its own.
Developers for new ICO projects now have more advanced methods of marketing at their disposal. New cryptocurrencies now rely on webinars, social media and animated presentations to promote their ICO.
The time gone very fast, today, people are not interested in looking the whitepaper, people interest is just only on how they earn very quick, they don't care the project they are looking the right timing when the developer may rug pull the money from investors, then they will ride the tide. Whitepaper won't matter most.