Nothing wrong with a good fryup in moderation and sensibly at the right time, ie after a very long ride.
After a very long ride, to replenish your energy levels with carbs, you may need to eat an excessive amount due to the fact that a gram of carbs only provides 4 calories, whereas a gram of fat holds 9 calories.
So if you burn off 7000 calories you then need to eat 1750 grms of carbs to replace it ie could you stuff yourself with around 3 pounds of spuds, by eating fat, you only need to eat 777.7 grms of fat, so by balancing it out, you do not end up stuffed and bloated.
Which brings me to the point of my favourite way to eat the night before a big ride/event or afterwards......2 big bags of chips washed down with a pint of Guinness