[MichaelCollins]

> Prompt or no prompt, if you use GPL software, you are forced to accept the GPL.

No prompt, no forced acceptance. You are simply wrong. The GPL permits all use, it has no restrictions on use. It restricts only distribution.

> This is no different from Apple’s license, which also allows you to use the software freely unless you want to redistribute it.

You are wrong. You didn't read Xcode's license. I did, it places substantial restrictions on how and where you can use Xcode, not just restrictions on distribution.

Do yourself a favor and read this document, since you obviously have already agreed to it without reading it: https://www.apple.com/legal/sla/docs/xcode.pdf

[prange]

Limits on distribution are limits on use. If you don’t understand that, I suggest you Google for some discussions about why many people don’t use GPL’s software - it’s because the limits on distribution affect their usage.

Fair point about the XCode license being more restrictive than I said.