I know it was a joke, but actually no, the aeroplane thing isn't recommended any more either, as it's considered a distraction when they should be focusing on whether or not they feel full, not whether somebody is making food entertaining or not. The current recommended approach is to serve food, but not be particularly worried about whether they eat it or not, because as long as you keep serving a healthy balance eventually they will eat something. Not to pander with loads of alternatives (or any), but also not to employ any techniques whether that's fun ones like aeroplanes/pudding bribes or threats or just making them sit until they've eaten.
Exception in the case of children with highly restricted diets e.g. underweight, special needs, multiple/severe allergies etc. Don't know what the advice is there as I haven't had one, just that this approach isn't sensible in that case.
But to take it all with a pinch of salt - DH did forbidden aeroplanes with DS2 (who is a toddler) because he found it fun, with no ill effects, he eats anything and doesn't require aeroplane noises any more. DS1 I followed most of the modern fads including BLW and he's way more fussy. I don't think its down to anything we did, it's just the way he is. He's 13, I don't make him eat veg, although veg is not the thing we tend to struggle with with his eating, it's more carbs/protein he's fussy over. But in any case, I wouldn't serve up an alternative, and if he moans he's hungry, which is happening more and more these days, then I tend to point out that he had a miniscule portion of dinner and suggest he eats some of the leftovers. If he does not want that he can make himself a sandwich or bowl of porridge which is what he normally does.
Agree at 17 it seems a bit silly to police her food, old way or new way.