I understand English very well and what I pointed out was correct about Barikui write up, I think your problem is you fine it difficult to comprehend a writing.
Now you have made same mistake by trying to explain to me what Barikui was saying now let me quote your explanation "Barikui is saying to start investing in bitcoin all you need is discretionary funds" now from this statement you said all someone needs to start a Bitcoin investment is a discretionary income, and I'm saying this could mislead a newbies who have gotten a little knowledge of backup funds in Investment, when a newbie wants to start Bitcoin investment and he knows about backup funds he needs it, not just discretionary income, we don't know when an emergency will happen so you guys should stop making it look as if starting a Bitcoin investment without a backup funds at first is good, an emergency can happen at the beginning or early stage of your investment so how will you over come it without a backup funds.
Backup funds is very much important, the only reason why we say you can start building your backup funds now is because they never had the knowledge of having a Backup funds now that they now have it is good they start building it a long side there investment, now this those not mean we should push same narrative to newbies, as a newbie before you start do well to have a little backup funds and then you can decide to build it alongside your investment or you start both at same time.
Hmm… you’re still not getting the point, all you need to start is that extra little money you can afford to lose which is your discretionary fund, you do not need to have an emergency fund before you can start your investment. For example I’m a newbie starting my investment with $10, surely it’s not a must to have an emergency fund at that stage but as I go on to increase my investment regularly, I’ll start planning for emergency funds to act as a hedge for my investment and reserve funds for my expenses.
So in order to sustain, maintain and continue my investment I’ll need to have an emergency and/or reserve funds but not necessarily to start. You get the point?.
Then you are not making use of discretionary income, because discretionary income is the amount left after taken care of your essential expenses. If you don’t have emergency or reserve funds how can one sustain their investment . I’m not talking about invest what you can risk , am talking about investing with proper planning don’t just go into investments just like that , without having emergency funds nor reserve funds you will only end up making your investments as your emergency funds in case if any expenses comes up , which will only slow down the growth the only folk that can pull such up is those that are still depending on their guidance to handle their needs.
For instance you are starting your investment with $10 as your discretionary income, is mean that is the amount of money you can stay without using for long and you have already set aside your emergency funds and reserve funds . But in this cases that you haven’t set any I don’t see any reason to call it discretionary income you can only call discretionary income if your main amount of money is $50 weekly , then you can break it down with some certain percentage, like $25 for expenses, while $15 goes to emergency funds then the remaining left over which is $10 to your investment.
Don't get it twisted and stop contradicting yourself. Any amount of money that's left over after you have taken away your weekly/monthly expenses and basic needs is called discretionary income. The $50 that you use as an example is not your discretionary income because your expenses is still part of it. However, it's from your discretionary income that you can use half of it to set up your emergency funds and invest in bitcoin at the same time, if you are a new investor without any emergency funds when you want to start your bitcoin investment.
From your example, the person discretionary income is $25, and he can share it into two parts one for his regular weekly DCA and the other part to build his emergency funds simultaneously with his bitcoin investment. When his discretionary income is at least three months of his income, he can build his reserve funds and then invest aggressively after that to increase his bitcoin quantity in a fast pace.
Not having an emergency funds in place before starting your bitcoin investment shouldn't be a hindrance to you from getting started immediately provided that your discretionary income is available.