>>1674064It's a niche that can set you apart yes, especially if you are good at it and could potentially teach others along the way. I know some channels that exploded in popularity from teaching things like that in different games (pokemon, magic) so a yugioh based one could work. There's also nothing wrong with play another game on different days if you need a break from it.
The biggest problem new vutbers have is getting caught in the backlog trap where they just play completely random games/new releases with no real schedule, that kills growth.