Well, one of the main reasons this is so is because we probably don't have organized and good crypto projects review community/communities. If we have that already, it should be affordable and decentralized ... the review community could earn its living via some additional sustainable ways.
By the way, what makes you believe the coin is good? Have you thoroughly researched and peer reviewed it or something? And you should be reviewing based on decentralized-crypto community agreed safe/good acceptable standards
I think one of the additional ways to help the community/dApp earn decent living is by using algorithm to rank really good dapps up within the "service section" (eg: section for dApps/communities that review new projects.) of a cryptocurrency. This should help them be more visible, gain more customers, be popular, and increase their earnings from fees, ads, donations, grants, etc. This kind of ranking is probably lacking in decentralized Crypto world .