I've been using linux daily for about 15 years on my desktop and servers. I've never had this issue. I don't know what you guys do, but to me it sounds like a solution without a problem. The same with security.
I'd argue that the system shouldn't automatically convert negative numbers to positive numbers. Instead, it should display an error to the user. Of course, that's an abstract thought as I don't know what was the system and who interacted with it.
I tried filters on other platforms, the results weren't that good. Yes, you blocked a word, but people often use images with text for some reason, and filters don't work with them.
American telegram? 😂