Well, it's definitely a fake, because it's a copy that someone presents as an original. Some people do not understand the difference, because it only matters to them that coin in the name has Bitcoin, and that they can buy more coin for less money. I remember one member of the forum a few years ago who was happy to have been able to buy BTC at a super affordable price (a few coins), to later reveal that he bought some forked coins (fake) BTC. Imagine someone asks you if you want to buy 1 BTC for $7000 or you want to buy 30 BCH for the same amount?

You can buy forked BTC coins on almost every legit crypto exchange, but you need to know what you are buying  - there is saying : "It is not gold all that shines"

Some of BTC forks can be seen on this list : https://www.forks.net/list/Bitcoin/