Although, I did hear that linoeic acid in excess may be detrimental for brain development (and may be one of a handful of reasons that neurodivergence appears to be on the rise). And more than just refined sugar, excess calories make you fat, which both LA and RS have a tendency towards making us eat in excess.
You need fat on 'nonstick' too. This is another common myth.
Sure, your T-Fal pan will "release a fried egg" instantly for the first 20~30 fried eggs, but then they will start sticking as the coating naturally erodes into your food and your body (including the adhesives that make a 'non-stick' surface adhere to metal). A splash of olive oil is all you need, and olive oil it is one of the healthiest foods out there.