Counterpoint, there is one form of attack in BotW, you have coupled it with a few prescripted interactions which give you the illusion of emergent behaviour, you will not actually be able to perform this action in 99.9% of your fights. In addition, your fire/attack/tree fall all just do "damage", ruling out a small number of specific exceptions your enemy will not respond differently to any so whichever achieves the higher numbers is best.
ER has different moves for light/heavy, one hand/two hand, running, rolling then the hundred plus the ashes of war skills which can be customised on each weapon. You can indeed set fire to the ground (it's a torch skill), you can catch a gust of wind (ash of war), you can freeze opponents etc. Enemies have meaningful resistances, choosing your armaments carefully makes a difference.
> Reskilling takes so much time to do as well so it's not like you can just swap and try out something else quickly
I tried this out to guage how onerous it actually is, this takes less than 15 minutes. Are you sure you're making these points in good faith?
What makes tetris or animal crossing any less repetitive? Nothing, and yet they're fun games people can sink hundreds of hours into.
Reskilling takes so much time to do as well so it's not like you can just swap and try out something else quickly. You have to go to Raya Lucaria, re skill, then level your items with stones, then go back to where you wanted to try something else out for a fight. You might find you actually don't like that and you have to do the whole thing over again.