Yes and no. You're correct about people skipping seasoning while bulking up. Which is what this looks like based on the protein bottle in the background.

I've also spoken to someone in person and online that skip seasoning while just trying to eat healthier.

there's no reason you have to skip making the food taste good just because you're eating a lot, if you're eating more then you're gonna need more salt, and other spices aren't something you can have too much of unless you're snorting nutmeg..