Dead links to blog.torproject.org and the Streisand effect

Why are Tor deleting their own pages on blog.torproject.org? They have something to hide, lol?

From @Kinney's domain, near end: http://pilobilus.net/comsec-101.html |See How to handle millions of new Tor clients on the TOR Blog. https://blog.torproject.org/blog/how-to-handle-millions-new-tor-clients

This returns Page Not Found for me. Still alive on archive.org: http://web.archive.org/web/20131010204046/https://blog.torproject.org/blog/h... Other pages from 2013 are alive on Tor's blog. IIRC there was similar issue with a page about Appelbaum, not sure.