Plenty of comments about the residents should know that airports are noisy - conversally, Stobart knew the residents were there and that their plans were going to increase noise levels.
What did they do about it?
As far as his use of the engine run bay blast walls/banking at LTN as a fair comparison with an aircraft at SEN idling on a taxiway waiting for line-up is concerned, well the noise levels being mitigated are hardly of the same magnitude.
That's no reason for doing nothing - what mitigation does a chainlink fence provide?