One could argue that the airlock-escaping-yeast may not actually be a good thing, that it may actually be an infection or wild yeast - much like 'gushers' when you open a bottle of infected bottle conditioned beer.Yup - the "dead" yeast actually managed to escape the airlock with a 17L brew in a 27L fermenter. The beer is tasting freakin' fantastic. A monk would be proud of it.
So, for sure, this method isn't for everyone - but it makes great beer and saves me money.
But you're right, whatever method works for you and if you save some money brewing beer you enjoy then all the better, nothing wrong with sharing those procedures at all.