Starting with version 88, Chrome (and other chromium based browsers) will imply rel=noopener if anchor target=_blank, the corresponding issue just got closed: https://bugs.chromium.org/p/chromium/issues/detail?id=898942#c29

Originally posted by @mkurz in #6366 (comment)