How on Earth does the blogger have only 1GB of iMessage data since 2009?
Mine gets bloated with images and videos to multi gigabytes in days, and it's unlikely that it's used only for text for 13 years. (I mean, it's either never used at all, or used for all sorts of media not just text, and since it has been used, it should be the latter)
Even if the actual media isn't stored in the database, all the metadata for all those messages should exceed 1GB IMO.
Mine gets bloated with images and videos to multi gigabytes in days, and it's unlikely that it's used only for text for 13 years. (I mean, it's either never used at all, or used for all sorts of media not just text, and since it has been used, it should be the latter)
Even if the actual media isn't stored in the database, all the metadata for all those messages should exceed 1GB IMO.