I don't think that really makes too sense, having a basic knowledge is far different from not having any knowledge and that sounds too awkward hence, acquiring a basic knowledge is what is required of before investmenting with hope of learning more on your way up, of which certain considerations or factor are very viable as to that regards which includes:
There are basic knowledge one should get before venturing into any form of business or investment, it is going to be a disaster entering into any investment without any basic knowledge.
Read the post again..... the poster was not actually talking about completely zero knowledge about investment
Besides 70% of what you listed which is 3 are what you ought to have know before even thinking of starting an investment in something like Bitcoin...
1. Your income flow (understand your the level of your disposable income) after taken care of your personal needs to a provitional emergency funds
So what are you insinuating here that someone should wait and learn his/her income flow ..... this isn't what you should learn it's what you ought to have understand before even thinking about investment... practically so are you telling people to wait and study their income flow that they have been experiencing for years... or they should wait to see if there will be any reduction in their income flow or probably you just meant they must get a stable income flow before they invest
2. Your risk tolerance level
How will a person who didn't or haven't invest learn about its level of risk tolerance

, besides it isn't what you learn its what you develop according to some factors like
[Ii]capital for investment[/li]
[li]investment plan [/li]
[li]your portfolio size[/li][/list] and many more... inwhich 60% are determined when you opt-into investment
[/list]
3. Methods of buying (lump sum or dca)
This is the only one you seem to be on the right side and I did mention a perfect option like the
DCA Besides it isn't what you need to learn that much it's just what you need to adopt because I can decide to learn without adopting it

However, technically you might need to learn about choosing a wallet and how I could keep it key safe as a basic knowledge because what's the point of investing continuously only for someone to steal it one day ... so its very important.