Mojang had a blog site they used for all Minecraft-related news and stuff from 2011 until the Minecraft website redesign in 2016. The Mojang blog remained available but inactive until the site was shut down in 2020 and now merely redirects to the Minecraft website: https://minecraft.wiki/w/Mojang_blog.
The good news is the entire website and everything on it (I think) was archived on the wayback machine: https://web.archive.org/web/20201018005255/https://www.mojang.com/.
The bad news is you can only view it on the wayback machine, no other online mirrors exist. This archived version is very slow to load and laborious to browse, usually more so than most other archived webpages for whatever reason.
The word of notch is a similar situation that now has a mirror hosted on the omniarchive website: https://blog.omniarchive.uk/archive/. The Mojang blog could also have an online mirror hosted on some website too (hint hint).