Far too long? I mean, they made the playoffs every year from 2008-2012, and after 2010 or so they were a top-four AFC team.
So in 2013, that carried over, especially considering they had just one the Super Bowl.
In 2014 after a good draft and coming off and 8-8 year that seemed more like a hangover than permanent decline, they were picked to make the playoffs again. They do make the playoffs, coming some Belichick trickery away from getting to the AFCC for the third time in four years.
So in 2015, after having another year with SSSr and another draft to recover from their SB exodus and with Harbaugh getting hype as a top-three coach (and getting Jimmy Smith back from injury), yeah, they were hyped as a top team. Then, of course, they get started immediately with the injuries and the anti-clutchness.
If you want to say you aren't giving the Ravens the benefit of the doubt now, that's fine. But it doesn't make sense to think they've been hyped for "far too long". The Ravens have been to the playoffs 6/8 and 7/10 seasons. It understandable why people assumed they would be there.