YouTube Censoring began long before 2018. I have had videos disappear, channels I subscribed to disappear from my subscription list and their videos not show up on the daily postings, so it could take weeks before I knew they had posted a new video.
I have had issues with the videos I've posted not showing up in YouTube's Search Results. In fact, most topics I search for on YouTube produce videos from CNN, MSMBC, Fox, ect....videos posted by people are not found on the list at all or appear on page 15 to 20 of the search results of YouTube (since mid 2017).
Since mid 2016 people have complained about their videos being demonetized or their channels receiving strikes for one reason or another which had resulted in many channels being removed altogether. Channels being removed has increased significantly in 2018, as has the demonetization of peoples' videos.
Take notice of the News outlets that are NOT complaining about their videos being demonetized or removed- CNN, CBS, ABC, Fox, MSNBC, etc... I do not think this is a coincidence that main stream media is now at the top of Google search results and YouTubes'. In fact, I believe it is because the dying media had been unable to sustain viewership for several years now and are in need of a lot of help to gain attention of internet users. That help is coming from Google, YouTube and Facebook as well as other social media sites and search engines.
I am careful not to click on their websites and videos. I certainly do not want to reward them for their shady actions. They were losing the infowar to alternative media and have now had the deck stacked in their favor again.
HIlary Clinton admitted that the government was losing the infowar in 2011. 
In 2013 AnonymousWeUnite warned of the censoring that was planned.
In mid 2016 Anonymous addressed the censoring on Facebook by employees in Philippines 
So now more and more are being affected, but we had been warned for years that is was planned and in the works.
Did the people plan for what was coming? Did the people think it wouldn't happen to them, or that they wouldn't be affected?
Just remember one thing in times like these- don't believe that you are alone in your thinking just because you can't find someone talking about issues that concern you, or you are no longer able to share your views with thousands of people. More than likely, you are in the majority and the government doesn't want you to know that. So as the censoring continues, take the time to create a contact list; names, emails, phone numbers, addresses, etc. of those you have contact with now on the internet, because in the future you will probably not be able to find them.
Use the internet to find individuals located close to you NOW while you still can, that you can network with and keep in regular contact with them. Partner up to get information out on the internet and in your local communities.
Make a list of websites that have produced accurate information for you in the past. Do it now before you cant find them on the results of search engines anymore.
The freedom we once enjoyed on the internet is gone and I expect to get worse not better. Please do not fall into the trap that it can't happen to you.