There are some serious problems with video game journalism. Publishers using strong arm tactics to get good press; journalists accepting gifts and favors; rushed reviews; amateur critics; and unreasonable demand from fans. To fix this we need to change our unfair expectations as consumers and we need to insist on journalists with proper credentials working for publications/sites that won't bend to unethical demands from publishers.
The problem isn't a lowball review for Uncharted 4. I'm sure some high scores were unduly influenced by advertising dollars and reader expectations. We can't just get mad when our favorite publisher gets a negative review. That kind of parochialism is what allows this broken system to endure. We need to expect better, from ourselves and from the media.