Are you arguing that the GPL check “effectively controls access to a work” or “effectively protects a right of a copyright owner [..] in a work or a portion the

Are you arguing that the GPL check “effectively controls access to a work” or “effectively protects a right of a copyright owner [..] in a work or a portion thereof”? Either way, the bar of how “effective” a measure needs to be to count may be low, but probably not that low.