This is an old problem, TV shows and movies have the same issue. The biggest issue the way I see it is that legitimate criticism is bundled together with outright stupidity and spite, leading to entertainment products gaining a sort of amnesty against negative press. Implementing systems that disallow harsher reviews and low scores is just as problematic as potential review bombing; it creates a false sense of perception of and in various user bases and potential demographics. Just look at the sorry state of Rottentomatoes in the past few years, there's obviously something up with the professional scores on that site. Sometimes, a great discrepancy between professional review scores and personal user scores can actually signify a real lack of appreciation for the product, an earnest disappointment. It's not always about people just being childish and spiteful (but that does happen as well). If anything, products that are universally praised by reviewers and bashed by users seem to get by on sympathy; the companies can point to the hate or "hate" and play the victim card, further spurring publicity and sales, and perhaps even gaining sales in demographics that would otherwise simply walk on by. I mean, look at movies like The Joker and Captain Marvel, lots of people were buying tickets as some sort of political statement and mark of support.
Game journalism has taken the same downturn as other forms of journalism; the fusion of journalistic inquiry and the selling of clicks has made it a mere commodity to be traded, reviews seem to have taken the same route since a while back. The sale matters more than the integrity of the salesman, professional reviews are absolutely bonkers today, it's like a massive scale version of the often unfair weighting systems on app stores, momentum begets momentum and allows products to plow unhindered through criticism and often glaring flaws or obvious weaknesses.