BA has a monitoring system which picks up incidents which fall outside of pre-determined values.
I know for a fact that this approach is being looked at. There will be one of two outcomes. If it is found to be a common occurence i.e. low on the approach and landing short of the TDZ at JSI then further investigation will uncover the causes and the issues causing the problem will be addressed. Or if the pilots' performance was lacking then they will receive further training.
Either way the issue will be addressed. Like any other major airline that sort of approach and touchdown is neither common nor acceptable.
Hands up any commercial pilot who has never made a bad error of judgement.