I totally understand removing annotations in the DWARF tables since they're not really needed in a production environment, but why would you want to remove stack traces? They provide invaluable information in a production system, and removing them increases the start up time with negligible difference.
In reality you'll tell whatever deployment system to deploy your binary/container, and you'll just wait until it's done. In such cases, 150ms won't make a difference in the grand scheme of things due to other systems such as your CI and other things in your pipeline.
I must confess to copypasta for this approach. Yes, stack traces are incredibly valuable. The upx compression itself does seem to be a no-brainer with the exception of any situation where that 150ms time actually matters.
In reality you'll tell whatever deployment system to deploy your binary/container, and you'll just wait until it's done. In such cases, 150ms won't make a difference in the grand scheme of things due to other systems such as your CI and other things in your pipeline.