Rumble is an information tool, it's not just "haha, Brrr when shoot". It's incredibly useful in many ways, and also very much helps immersion. The rumble we have now is much more precise and varied than it was back in the n64 generation, especially with controllers like the ps5 dualsense. I have a Gulikit KK3 MAX and its rumble is amazing, with every feeling from small precise taps to arm-shaking explosions. And when a game has well designed rumble implementation, which many have now, it's just awesome. One genre of games that really shine is racing games, you feel everything, even different vibrations on different parts of the controller if for example your left tires are on dirt and right ones are on asphalt.
A good example just from the top of my head was when I played Pacific Drive, your car can break in many ways and I always noticed that one of my tyres had a flat from the rumble before I noticed it any other way, and knew which side it was on just from the feeling.
I don't understand how they got the official steam brand name, it's just a mid-end controller with some major features missing.