It may take some time depending on the number of files you have and the total size. You can use the "Email me when done" option to get notified once the archival completes. You can then download the created archive locally. Make sure to download it to your Google Drive shared folder or copy it there after download so it gets synced and backed up in the cloud.
If you’re in a place where you don’t really have internet, but you don’t want to use up the data that’s still available on your mobile device you can still get access to the information that you want. Downloading and watching videos can eat away a lot of data from your phone plan or it could take up a whole lot of bandwidth that you really don’t want to be using. Instead, you could have the video already downloaded and ready to play without you having to continue using up the data.
Since you're probably going to be paying for a backup service for years, cost is an important factor to consider. All the services rounded up here are subscription-based, but they partition their features and fees differently, so it's worth comparing plans closely before committing to one. Most construct pricing tiers based on the amount of cloud storage included, however, or by the number of devices you can use with an account. A few services offer permanent free accounts, but those plans impose paltry storage limits or restrict key features to the paid versions. Watch out for file-size upload limits as well.
You never know what’s going to be pulled down from your favorite social media sites. That means, if the show is removed, you wouldn’t have any way to access it. If you’ve already downloaded that information, however, you’ll be able to pull it back up and watch it over and over again, however frequently you want. You don’t have to worry about whether it’s going to still be available on the social media site you use when you go back to it.