That's just blatantly false. Distribute your binaries with source. Or distribute them with an offer of source.
There, problem solved. Heck, may your binaries non-redistributable without source.
Either way, users have the option of using/distributing your binaries, or not. You've given them nothing they didn't already have.
No it's not, do you know what a 'guarantee' is? Unless the code in question comes with that as a _condition_ there is no _guarantee_.
If users only want binaries that guarantee they have source, they can insist on only downloading/acquiring binaries from people that guarantee they provide source.
Only way to guarantee that is to make it a condition for using the code in question, which is exactly what GPL does.
Do we really need to continue this dance of yours?