I find no food trend annoying.
I simply don't worry about what others choose to do at meal time.
As Charlie said, "To each his own".
If that's what someone wants then let them have at it.
If it's not what I want then I won't get it.
As far as portion size. I'll eat as much as I want until I feel full. Then I'll stop eating.
I might doggy bag it if there is enough to make it worth it but I'm not overly concerned about waste.
It really isn't that big a deal if a few scraps end up discarded. I'd much rather have too much served to me then too little.
Sure, Say all the homeless could eat on all the wasted food we produce but they don't want your leftover brusselsprouts and they would serve a better purpose being composted.
I don't like waste and recycle or compost what I can. My recycle to trash is 10 to 1 if you use a standard trash can as your guage.
Let estabilishments serve what they feel the need to and in the portions they percive necessery to make a profit and stay in business.
You don't want it then don't buy it.
But don't begrudge those who want it simply because you don't see it as your ideal desire.
Why be annoyed by what someone else might want?
I never peel potatoes,
I make my wife do it
Now that's a smart man.