Infect has long been a solid meta call. As long as targeted removal is low, which seems to be the case right now, it will steal games.
With Jund and Stoneblade making their presence known, I wouldn’t go as far as your players, but if you need something to embarrass Titan, it’s quite good. I’d be cautious taking it to a big event simply because red decks tend to be hard matchups and depending on the build Infect can lose to Blood Moon.