Completely agree. I just did the same.
I used scotch tape to temporarily hold the cables in place until I was ready to reinstall the bottom cover, but I removed the tape at that last step (didn’t want it coming loose later, and possibly obstructing a fan).
These individual instructions are re-used across multiple tutorials. If you are replacing the battery, you probably won’t need to remove the three connections from the Airport card; if you are replacing the display, you definitely need to replace them, because they are connected to the display. I just replaced the battery and the display in a single activity, so I pretty much had to remove everything. Also agree with a previous commentor that it’s easier to reconnect the cables before the card is reconnected to the system board.