Not in a world where you can continue to post on Infowars or 4chan or reddit or HN or wherever instead, no. Why would it be? You really don't see the difference? In Russia, it is illegal to report on international perspectives about events in Ukraine. That content doesn't exist, and you can't link to it without committing a crime (and, likely, also using a ban evasion tool like a VPN).
Do you have an example of an idea or perspective (even one!) that is being suppressed by "major platforms" in a "co-ordinated fashion" that I won't be able to refute with a simple link as I did above?