The general agreement here is that the law was made because Doordash/Postmates were impersonating restaurants without authorization from them and taking orders

The general agreement here is that the law was made because Doordash/Postmates were impersonating restaurants without authorization from them and taking orders in their behalf, so it's not exactly similar to your shoes examples. Most people find the impersonation and lack of transparent unreasonable. Whether the law is the best tool to fix it or whether it will have side effects is what's in debate, but the main intention of the law seems pretty clear to everyone.