"the irony reads" isn't even grammatically correct.

Should be OK (besides the lack of irony!). Easier for me to show with another noun, comedy:

"You HAVE to buy her novel ASAP! Sure, the comedy reads a bit acerbically at first, but chapter two through to the end is literary perfection."

I think what they're going for is

> The irony of that headline...

> [reflective pause]

> "Coming soon, in a future software update" [shorter pause] now reads like an epitaph