Cropping of the output blanking on exports

Is there a simple way to crop of your output so you dont get the letterboxing. Or are you forced to change youre timeline to your wanted output for that? Just think it shoold not use letterboxing as default when using the output blanking. How many of us really like letterboxing anyway?

Change your timeline resolution in the Master Project settings and change the scaling to Scale Full Frame With Crop. Setting the scaling to this will enable you to vertically reposition the clip with the Inspector if the clip needs some reframing. If the video is shown on a 16x9 display, the top and bottom blanking will automatically be added.
Pics show the Timeline with the Master Project window open at the bottom, how it looks on YT, and full screen on a 16x9 screen.

change youre timeline to your wanted output

That's my preferred way to work.