digged a little into this. art 17 relevant excerpt seems these: > the controller, taking account of available technology and the cost of implementation, shall

digged a little into this. art 17 relevant excerpt seems these: > the controller, taking account of available technology and the cost of implementation, shall take reasonable steps, including technical measures, to inform controllers which are processing the personal data that the data subject has requested the erasure so it seems a "disallow" in robots would solve the issue with crawlers and public data, but that works at page levels, not content level. pushing a crawl request after information erasure may not be enough, since we need to inform the controllers on why the data has changed, not just that it has changed.