Yes, BAPS is rubbish, but those on that DC scheme are in a better position that those in NAPS, since they can move companies without being penalised.
BA can afford to pay website is utter rubbish - BA cannot afford to pay, and will be so heavily fined if NAPS is not closed to existing members or the funding hole is plugged, that it could even be worth shutting down the airline.
The trash on that website is unbelievable - if you think that you can possibly compare aircraft purchase funding that has been known for years in advance to a pensions defecit that is based upon promises made in the past yet whose future funding at that time is essentially unknown and highly fluctuating due to low interest rates, then you live in cloud cuckoo land.
Who wrote that trash about 300 year gilts? It is completely ignorant to any economics or finance. Assuming that low interest rates will rise in the future ludicrous - there is nothing to say they will especially if inflation has indeed been killed by independent central banks.
Take the company down if you want - don't say I didn't tell you.