Lego set 80038, 'Monkie Kid’s Team Van', repeatedly uses yellow Technic Brick 1 x 1 with Hole (item 654124) where it could simply use a standard 1 X 1 brick (item 300524).

For instance, in Instruction Booklet 2, you can see where these brick holes are covered up in step 120, or even immediately obscured in step 150.

Is there a design rational for the use of these bricks (a significance to Monkie Kid, or Chinese culture in general?) out is it more likely a simple surplus of Technic Brick 1 x 1 with Hole?

Lego set 80038, 'Monkie Kid’s Team Van', repeatedly uses yellow Technic Brick 1 x 1 with Hole (item 654124) where it could simply use a standard 1 X 1 brick (item 300524).

For instance, in Instruction Booklet 2, you can see where these brick holes are covered up in step 120, or even immediately obscured in step 150.

Is there a design rational for the use of these bricks (a significance to Monkie Kid, or Chinese culture in general?) or is it more likely a simple surplus of Technic Brick 1 x 1 with Hole?