If the roles were reversed would you delete? Or would you just like and say you did?
I can happily endorse the company's public statements on this subject: personal data will be deleted within the timeframes specified (for obvious technical and that's-a-bad-idea reasons, it's not instant). Part of SRE's function is to arrange for SLAs to be met, including deletion SLAs.
Can confirm. Near the end of internships I use my browser history, and mostly the search history contained in that, to figure out what I've done so I don't forget anything in the report. It's a near perfect way to tell what I've been up to any day.
[citation required]. Google goes through great lengths to make sure that's not the case, both technically with legal defense against overreaching subpoenas.