No, the ease of installing/removing a PSU is based on your case. Those Dell pcs are made you dont have an easy time removing parts. They want the PC to fail so they can sell you another one after a short period of time.
Well to describe it better, it's like in the videos they just slide the PSU in. However in the Dell, I had to raise it up to get it to fit in the brackets. I hope the HP I currently is easier where I can just slide the psu in and then put the screws in.