“We’re aware of reports that access to Signal has been blocked in some countries,” Signal says. If you are affected by the blocks, the company recommends turning on its censorship circumvention feature. (NetBlocks reports that this feature lets Signal “remain usable” in Russia.)
Do you really not see that this is literally just "we are the good guys so it is ok if we do it"?
"Misinformation" is whatever those in power decide to be such, whether it can be found on Signal or X or wherever, and whether the ones deciding it are in power in the UK, the US, India, Germany, Venezuela, or Russia.