Honestly I don’t care if the government knows who’s all going to the party. Someone’s gonna post pictures of it anyhow. My garbage data is just more stuff for them to sort through.

And I’m not gonna bother missing out on everything out of fear that the government will do what exactly with my data? The risk is so low for your average person.

Because it’s a significant inconvenience to disable those notifications over the very unlikely possibility that some bad actor will hoover that data up, much less do something nefarious with it.

Signal push notifications don’t contain any useful plain text data (no content, no information about who sent you a message). AFAIK the only thing you would be leaking is that you received a message on signal, and frankly that metadata is probably going to be leaked to the US government regardless of your use of push notifications.