Nah payday 3 flopped. They had stupid decisions that are fundamentally ruining the game and got rid of the people buying in early. It’s also unfinished as you mentioned. Can’t fully stealth heists - which a lot of people do in Payday 2 - the assassin gameplay and stealth are simple and really fun (when they work). The initial levelling system was bonkers.
It deserved what it got
Yeah because it was a free game in the “hold to fly the helicopter up” genre that wasn’t supposed to blow up this much. There are millions of such games on app stores, steam, etc. Some of them catch lightning in a bottle and become ridiculously popular despite there not being anything special about them.