In other words, is two 5V pins plugged into two pins on another device (say a 16x2 LCD display) different or the same as using one 5V pin on the pi and splitting it to two pins on the LCD?
For more context, I'm adapting this breadboard diagram to a Raspberry Pi Zero W. On the breadboard all the 5V connections are in parallel with a single 5V pin, but in my implementation it is easier to use two different pins (I'm plugging pin-to-pin with jumper cables).