Of course it is fake, just look at what other videos are selected on the side.
If you still don't think so, pour a bag of oranges into an already burning fire and see what happens, does the fire get bigger or smaller?
Now, as some of you are aware an orange peel has a bit of oil in it and if you take a fresh peel and fold it in half next to a candle flame you get some cute mini pyrotechnics but that is about it. About the only handy trick I know to do with orange peels is you can use the oil as a cleaner for stains on wooden surfaces, so you can rub a stain with a piece of peel then follow with a paper towel and it can do a fair job frequently but that has nothing to do with making fire.
If you are still in doubt, when you get proficient with making fire with flint and steel or with a bow drill you'll learn how absolutely critical it is that everything be as absolutely dry as possible. You can get into trouble even by putting a clump of tinder in a T shirt pocket on a hot sunny day and 20 minutes later enough perspiration has steamed off you to prevent it from lighting. Now think of an orange, the things they make orange juice from.