If I go to a particular Sci-Hub mirror and it's down, I often go to the Wiki page to see the different TLD options. Same for checking some of my favorite Torrent trackers. I don't use Google for any controversial searches anymore, but if Wiki continues to degrade in quality, I'll really be SOL.
The only thing that consistently works for me is the Telegram bot.
>If I go to a particular Sci-Hub mirror and it's down, I often go to the Wiki page to see the different TLD options
You can still Google Sci-Hub, and find plenty of pages listing active mirrors.
Notably, https://www.sci-hub.pub is the top hit for me, and is reliable enough.
Why does it matter though?
I'd wager few people would use Google to search content on Sci-Hub. The normal usage is simply entering the DOI of the paper you want on Sci-Hub's front page.
Note: you can still search for Sci-Hub itself on Google, and find plenty of pages listing active mirrors.
There are alternative search engines to Google, in particular some where base censorship is not so easily enforced:
I really like yep.com, as per https://www.searchenginemap.com/ it's one of only four search engines that run their own web crawlers. Results are slow but incredibly high-quality.
its crazy that russian search engine is more "open" compared to US search engine
On this one particular issue. There are certainly things blocked by Russian search engines which have to comply with a rather lengthy list of banned sites since about 2012.
That's not the case.
Paywall
Oops, sorry about that!
mirror: https://archive.ph/GTnS3
It’s most definitely not.
There are countless websites and topics removed from Google. It’s impossible to say.
If by more open you mean not easily censored by anybody but Putin. But it's hard to imagine that it's actually more open by any reasonable definition of that word.
>its crazy that russian search engine is more "open" compared to US search engine
It's crazy that you think there's only one search engine in the US.
Try this one: https://www.bing.com/search?q=sci-hub
>There are alternative search engines to Google,
..and of those, I really wouldn't be giving the one under the direct control of Russia's FSB as my top recommendation.
A little-known American search engine known as Bing[1] lists Sci-Hub just fine though.
Hail the corporate overlords!!!