Please don't guide scammers to create more clones from source code of Bitcoin.
Scammer don't need this guide when there are tools which allow to create hard fork with few clicks & services which create your own hard fork.
The guide would be slightly better if the title is "Learn Bitcoin protocol by forking Bitcoin"
On the other hand forking Bitcoin does have its own use: if you want 1000s of Bitcoin for testing (i.e. you cannot or don't want to fake the mBTC you can get from testnet faucet), it can be a good approach for testing.
They also can use regtest, which is easier than modify client & perform hard fork.
The idea here is not to rely on a third-party service provider but to fork bitcoin ourselves. When we rely on a third-party to create a hard fork for us with a "few clicks" as you put it, it creates a security risk that we do not want in this type of project. Relying on a third-party service to fork the software on our behalf is not the best way to do it when performance and security are top priorities. That is why we download a full copy of the blockchain and run a full node ourselves. This may not be easy given that the blockchain is currently over 300 GB in size. However, it is necessary if we intend to do things the correct way.
This is a marathon, not a sprint.