Are the 'cached' pages eventually deleted? I've seen some shared `https://www.phind.com/search?cache= https://www.phind.com/search?cache=*` URLs which redirect

Are the 'cached' pages eventually deleted? I've seen some shared `https://www.phind.com/search?cache= https://www.phind.com/search?cache=*` URLs which redirect to the Phind landing page. Wiping these pages would not be good from the preservation standpoint, especially since the URL doesn't seem human-readable.