Also back in the days you did not need to send all your data to a server in order to do some processing on it and I believe Word still has an built-in grammar/spell checker that works just fine without all your documents being sent to Microsoft.
Yes to use their service I need to send them text, they can't process it if I don't although it would be nice if they offered an offline app, even at a price.
However it's annoying how they store documents and try to be a document management / basic authoring system to, I see no reason why they should need to store documents.
It also seems they are missing a trick. If Grammarly opened up their API's, there are so many integrations that people can freely write and drive more paying Grammarly customers. At the moment I copy and paste from my text editor into Grammarly and back out! I never installed the browser extension for the same reasons the originally twitter poster mentioned, i selectively copy and paste in to the app.
They have a plugin for MS Office and probably some other word processors.
What if part of the user text is stored in a backup, and the backup is misplaced and it is not deleted in time? What if the file is marked as deleted but it's not zeroed and erased from the disk?
What if the deletion time coincides with a big outage an it is delayed? Or the don't want to delete anything until they are sure all the databases are consistent?
What if the text is in one of the cache just at the time of deletion?
What if the user saves the text as snippet and later the user remove it? When do you start to count the two years?
What if the user submit the sample as a suggestion for an improvement, and it's copied in the automatic rules? What if one of the developers do this without the permission of the user? What if multiple user make the same suggestion?
What if the text is copied in a screenshot in a marketing material? (Probably not applicable in this case.)
What about legal request to track some users? What if the user sues you and you need the info for the trial?
Just put "forever" in the legal terms, and if you want to be nice try to delete at approximately 2 years.
...unless you use their cloud storage system, which Word tries to get you to do. The last time I read that ToS (not recently, probably 1-2 years) it included granting MS the rights to share your data with any of their customers or licensors for legal or business purposes, past, present, or future.
Honestly, I’m sure that those terms were written by a legal team to cover reasonable potential or actual uses, but they also cover ridiculous uses, and it’s not like you’d even know...
Tell that to Grammarly's customers. From what I hear, they do a much better job.