I believe nobody should count on backups provided by the product that stores your data.
There are different kinds of backups here:
* the ones that are part of the offer, where the provider gives you a convenient way to recover from your mistakes, this is a feature they provide when their services are operational (in this case, the snapshots feature).
* the ones they put in place to mitigate incidents and maintain their SLOs. If you accidentally delete a file, you don't have access to them, they are useless to you. These backups are a mean to reach their service level objectives. Nobody can offer you 100% guarantee that they won't lose your data in an SLO. If someones promises you this, just... don't believe it.
(edit: formatting, typo, mention snapshots in case 1)
There are different kinds of backups here:
* the ones that are part of the offer, where the provider gives you a convenient way to recover from your mistakes, this is a feature they provide when their services are operational (in this case, the snapshots feature).
* the ones they put in place to mitigate incidents and maintain their SLOs. If you accidentally delete a file, you don't have access to them, they are useless to you. These backups are a mean to reach their service level objectives. Nobody can offer you 100% guarantee that they won't lose your data in an SLO. If someones promises you this, just... don't believe it.
(edit: formatting, typo, mention snapshots in case 1)