I don't understand the question. Surely you're not implying that the fleet is ageing therefore we should just accept the occasional near fatal mishap now and again? They charge a lot for their service and earn a healthy margin on their sales, so surely it's not asking much for us and our families to travel in relative safety?
T3 have an aging fleet of a similar sized aircraft and although they have had the off tech problem, they seem a fairly sound airline with a robust set up.
I'm very surprised BE aren't more closely involved. It's their colour scheme,flight number and and branding that will likely be dragged through the mud should a smoking hole ever happen.