According to Web Beta Info, WhatsApp will now introduce a feature that will eliminate the option of unlimited storage for WhatsApp backups stored in Google Drive. 200) option will be provided.
With this option, WhatsApp users can delete a particular media for the next backup. WhatsApp is considered to be the easiest and most effective way to save WhatsApp chat backups in Google Drive for users who have switched phones and retained old messages and chats.
According to Web Beta Info, the feature under consideration is in the pipeline and will be introduced soon (possibly in the coming weeks) as a future update of WhatsApp. Google currently offers its users the option of unlimited storage as a WhatsApp backup chat.