Sure one guy or all by himself carrying tons of weapons and ammo is not a realistic scenario, but expanding the range of weapons throughout a campaign usually enhances the fun factor for games while also enabling variety of ways to engage in combat.I know people say magic chests aren't realistic, but being able to carry over a dozen weapons at once is just dumber. That's why Rambo uses arrows. They can take out an enemy quietly, after all.
But of course, RE4 etc don't follow the same rules as RE1, and all that. You bring the fight to the very things you're meant to feel some kind of fear towards. Hence it's pish as a survival horror game, but epic as a COD fan.