I've been going to the lane for over 30 years and generally the atmosphere has been poor. Sure there are exceptions, Newcastle in the league cup when we won 3-0, Swansea 5-2, Leeds 2-2, Derby games, the night cup games under Warnock, League One promotion games under Wilder, Man Utd 3-3, other games v bigger clubs. But these are exceptions, the majority are quiet affairs and always have been. Maybe the acoustics of the ground don't help but this criticism is nothing new.
Lots of games under Bassett in the second promotion season were flat even on the run in (oxford, watford, newcastle) and I remember him commenting on it. It's maybe just the way the fans are. Generally we need something to fire us up, the classic example being the boxing day v derby when the atmosphere transformed in a few seconds. I don't think we're alone, most home support is shit vocally but I disagree with the sentiment that it's worse now than before. I preferred the atmosphere standing at games but not sure this translated to it being louder.
Away days as we all know are completely different and so be it, part of the experience.