That may be true, but honestly I don't think it's right to say that rich people are “comfortable” being aggressive in terms of their bitcoin investment involvement, because I think no matter how rich you are if for example you treat investments that always tend to lead to aggressive actions then surely there will be at least some tension and pressure that you will most likely feel because of the fear of experiencing losses. So maybe it's more accurate to say that rich people are those who are “likely” to be able to try some aggressive actions in their investments
Well being rich is already an advantage when it comes to Accumulating, same as being aggressive, the only reason one will feel any tension or pressure, is due to lack of proper knowledge about bitcoin. Because bitcoin ain't some kind of shitcoins, that one should be feeling tensed or pressure whenever they Invested in it . That's why long-term investment in Bitcoin is just the best , because aslong one have already fixed their mind for long-term holding, they won't be bothered by the market conditions, instead focus more on accumulating more bitcoin, being aggressive as they can without over doing it.
In terms of income yes I agree with you that not everyone has a steady income or income in life, but it is a fact that often the problem of uncertain income is what makes investors have to experience delays, on the other hand I believe that DCA is an effective way to maximize future profits but sometimes when you are experiencing problems in terms of income in your life then it is definitely possible for you to experience delays in allocation that can interfere with something that should be done with consistency, I don't know whether or not luck of the draw plays a role here, but certainly success is more likely when you have a good, stagnant income without any problems which makes it easier to maintain your DCA strategy
Imo if someone is experiencing any financial situation or problem, is better to reduce their amount for accumulating for a while than stopping totally. So it won't affect their state of being consistent. Like for instance one amount for accumulation, was $100 weekly , he or she may choose to reduce it to $50 weekly inorder to take care of that financial situation or problem they are facing at that time around