Its not a surprise but it has not really received a lot of attention since people have reported it.
https://github.com/signalapp/Signal-Desktop/issues/5751
Also signal as a service is not really open source because it is not selfhostable. The server backend is proprietary afaik.
Also brainwashing. People get their ideas from other people. Some through books, some through those they call experts but we‘re very easily influenced. Getting blasted with biased shows and commercials that show us how „fair“ law enforcement is makes people easy targets for pushing dangerous laws.