I mean, Death Stranding was pretty far from being my cup of tea, but looking at it objectively it was hardly a flop. Got an 82 on metacritic on PS4 and 86 on it's late PC release, was nominated for many awards and won 9 of them, had the biggest launch for a new IP in Japan the entire generation (beating out Sega's Judgment launch by about 40k copies), hit 3m+ players on PS4 and made back it's budget and started turning a profit within 6 months of release, then sold another 477k on the first month of it's PC launch and has sold over 1m on PC now according to Steam Spy, with the publisher of the PC version reporting today that it brought in 23m euros in revenue for them.
Its not a flop but it did not garner any of the praise Hideo Kojima is used too from the industry or gamers. How many people are putting DS in the game of the year/best PS4 games list? It was also clear that SONY was happy with games initial performance; they pretend the game does exist. There was also that rumor that SONY's other studios were also unhappy with the amount of money spent on the game vs its performance.
Death Stranding is not even in the PS+ collection for cryin out loud! but Days Gone is?