How are you gonna say either Desperados 3 or TLOU2 is not a stealth game? Stealth games can play rather differently from each other, just like any other genre. As
Mark Brown put it, we want [genres] to be as broad as possible. Wasteland 3 isn't close to Desperados 3, they only thing they share in common is the isometric view. Wasteland 3's combat is TURN-BASED like XCOM (which is basically DnD combat but with guns) and it's an RPG.
Are you going to say what you're doing in the vast majority of gameplay is not the following in both of these games?
"avoiding enemies by a combination of staying out of sight or hiding in bushes/tall grass/behind objects, analyzing patrols thinking about different tactics to take out enemy/enemies without alerting the other enemies"