Is there any way to reduce the Item "interact area"?

So here’s my problem.

I want to add this barrier to my map, but I don’t want the interact button to take up a quarter of the map, as you can see.
The barrier also doesn’t have the proper rotation by default, and the scale comparison is ridiculous. In the last image, you can see 2 items selected, and both are scaled up to 3…
This doesn’t make any sense.

My question is whether there is any way to reduce this.

My second question is: “Why?” did they make it like this?