I never look at the feedback. As you pointed bad feedback is deleted and most good feedback is fake.

Everything I review on my hobby website are 100% honest reviews, but a friend gave me some Telegram groups where you can have TONS of free stuff in Amazon giving good reviews in exchange. Watches, GPS, gadgets... Literally thousands of free new items every day.
So beware, loads of the amazon reviews, specially those with 5 stars and pictures, are fake/dishonest. Personaly I only got 4 items doing that, and because were items I really needed and 3 of them were good and the 4th a POS. But if you want your money back you have to write a good review, but I know people getting decenes of orders like that every week.

So yeah, Id not bother with reviews. If you don't get your item fill a claim in the platform and done.