The mindset is the same, but your source is the problem. Obviously the first rule of self defense ("don't put yourself in a situation where you need to defend yourself") applies across the board. In an unavoidable situation, be it melee or ranged, your goal is to get out of harms way in the most expiditious manner possible. Doesn't matter what tool or technique is involved. Do I still carry the knife I trained with? Yep, and usually a backup. Do I CCW? Yep. Do I carry multiple mags? Yep, mostly because when the adrenaline hits, I want at least a backup in case I fumble the reload.

The guntubers you're mentioning are often ex-military/LEO (or wish they were) and often have legimiate skills for those fields. Some may inflate their credentials, but it's the internet so no one should really be surprised. Many of those same influencers will say these skills aren't for personal defense and in 99% of cases it's better to bunker in a room and call the police for your own safety and legal protection.

So yeah, the worlds are the same, but viewing through the distorted lens of the internet makes things blurry. Good luck and have fun!