$10 constant investment will amount to little in the long run and almost a messy way to start up a bitcoin investment, I think also that for anyone to arrive at a successful investment position one needs to be aggressive a bit, at least that will help us to be able to take some aggressive financial decisions that can help us to arrive at a good investment position faster.
Investing a low amount like $10 as mentioned by members sounds like a joke considering Bitcoin's current value.
In other words your opinion is that since the person cannot do more than $10 they shouldn't do at all right?, you are not wrong on the little that can be achieved for a long time but is not a joke if somebody tells you is how long they can go because is just like when you say that the maximum you can invest at once is $300 there are also people who would look at it and laughed at you that is a joke for them to use such little amount on it because their discretionary income is bigger than the overall yearly amount of both the main capital of the other person and their discretionary, so actually what I want tell you is that the $10 is not what they truly feel to invest but is because stagnation of finance, low business income or slim salary are the things that subject somebody that way.