Irony is not something easily sensed by everyone. Sarcasm can be immediately detected by tone, but irony is often meant to sound exactly like the opinion given. One might say a stupid opinion with a straight face, and expect it to be known that they are being ironic, because they couldn’t possibly be so stupid. But that is not how it works in reality. People believe all kinds of stupid and/or terrible things, and saying a terrible opinion ironically helps that terrible opinion spread just as much as saying it in earnest.
I don’t think we can afford to be ironic anymore. It is lost on too many people, or the irony goes on too long and morphs into reality.
Say what you mean, and mean what you say!