I personally think that finding out the best casino by own exploring is the best and safest, but when we explore ourselves, we still need some sources from where we can analyze or verify about a casino.
From this point of view, even casino review sites often show fake reviews, but we still depend on them partially to know the reviews of a casino.
And that is why I also take a look on the Casino Guru, Trustpilot, AskGamblers, and if I talk about Safety.Casino, their listing shows the average score of the top five review sites including these three, which I found interesting.
Still, I wouldn't say that you should blindly trust them and their reviews, however, even if we explore ourselves, we can still use this site as a tool.

As for fake reviews inflating ratings I don't think we can escape that these days and a lot of places work that way. What matters more is the quality of those reviews. Three free words from an AI agent is one thing and a meaningful text from a real person who got paid is another. If a casino can afford good quality marketing there may be fewer questions about it since one-day scam sites usually don't have that kind of budget.
p.s. not saying I approve of this method though just sharing a thought