this seems to be making its way to western shows as well - when taskmaster has a food based challenge, they often include a reassurance that the food didn't go to waste. and i've seen similar on some youtube shows.
Yeah Taskmaster (which I adore) came to my mind too. I think it's more common when the food in question is an animal product, but still it just seems a bit contrived when behind the scenes the catering company is probably chucking tons of food the talent didn't feel like eating on a given day anyway.
It's entertainment, it has an environmental cost, sometimes a big cost. I don't think you need to signal that it's unacceptable for that cost to be paid solely for entertainment's sake. What's the difference between some food waste and burning fuel to drive a boulder out of town for a laugh.
I hope they don't make the staff finish off stuff, like Marmite and porridge ice cream, which makes all the contestants gag.
A more practical approach in this case, where the concerns are probably slightly different than what we see in the article, is probably a (monetary) donation to a food bank.
for example: https://youtu.be/_gNZR5IEsAA?si=x5nvoBzC9Xc4fxFs&t=1674