Do you really want to delete <x id="PH" equiv-text="videoChannel.displayName"/>? It will delete <x id="PH_1" equiv-text="videoChannel.videosCount"/> videos uploaded in this channel, and you will not be able to create another channel with the same name (<x id="PH_2" equiv-text="videoChannel.name"/>)!
Short text to tell people how they can support your channel (membership platform...).<br /><br /> When you will upload a video in this channel, the video support field will be automatically filled by this text.