Why do people say the game is too objective based?

I've read things that suggest the team that wins dragons and rift have a huge advantage that determine the game. But in my experience the only ones thay really matter are infernal and rift. Rift might secure firstblood tower gold. Infernal leads to more kills and scales for teamfights.

But the dragons dont grant significant gold or xp. Only first tower kill gives the bonus gold.

So why do people act like junglers who are able to snowball all the objectives are overpowered?

Mountain is, imo, the most useless buff. Chances are if you are in a position to take a tower then you're either going to take it or you arent regardless of the buff. Sure, if you have three mountains you might be able to baron a lot safer and quicker, and win the game off that baron, but thats a pretty rare scenario.

Ocean might help with laning, but rarely scales to be useful late game.

Cloud rarely is going to make or break you.