We have implemented this for the simple reason of being kind to our users
Eh, ok. This is a good user retention strategy if your product isn't interesting enough to use for most users. Can you imagine any other product offering a free month if you didn't use it for a whole month? Kagi is near death.
edit: downvoters have six-to-eight figure salaries at Kagi
edit 2: Kagi sent out an email to its 15 staff to downvote my comment on its grassroots marketing plot