I'll take it as a one-off incident from a vocal group of smarky fans. As others pointed out, despite the "boring" chants, fans in the arena took the time to hold up their cell phones in the dark. The fans still pop for The Wyatt's glitchy video, and Bray's "**insert random city** we're here" introduction. And whenever Wyatt starts The Whole World In His Hands song, the crowd sings along. Bray receives consistent reactions from live crowds, so we're not at a point, where we need to hit the panic button.
Although, I will say this. Bray's motivations for going after Jericho are still unclear, and the match is on Sunday. I can understand the need for patience and giving the story a chance to play out and develop, but the match is this Sunday, and we still don't have an idea for Bray's motivations.
Wyatt targeted Bryan, because he wanted to brainwash him into being one of his little minions, forcing Bryan to turn his back on the fans and ending his quest to fight 'the machine". With Cena, Bray was on a mission to expose him as a phony and a false idol. But when it comes to Jericho, we still don't have any real answers yet. Maybe they're saving the real story and Wyatt's big explanation for a Summerslam rematch, but a match is happening on Sunday, and we're not at a tip of the iceberg point yet with this feud. It's very strange and awkward.