No-one is 'knocking that' - it is "I dread to think what could have happened if it had been another airline run on a shoestring budget." which is wrong.
It is a common, possibly press-fed, perception that lo-cos are less 'safe' than mainline carriers.This is far from true and you might be surprised to compare the number of incidents per sector of many. ANY UK 'shoestring' carrier as you put it (whatever that means?) has to meet exactly the same minimum safety and training standards as BA, as laid down by the regulator.
You may well be correct in terms of foreign carriers, of course.