I would think that if someone spends 4-10 years investing 30% of his/her income into bitcoin, then they likely would not need to have as much of an emergency fund after getting several years into the investment because the investment can start to serve as the emergency fund...
When anyone is a beginner to investing, they have to make sure that they have an emergency fund, but as a person becomes more and more assets and wealth, they are going to have more and more resources in which to draw upon to address any emergency that might come.. and surely I am not suggesting being sloppy with any kind of financial management, but the fact of the matter is that rich people do not tend to easily get shaken out of their investments, especially if they have spread themselves out a bit (which is diversifying and not necessarily into shitcoin) as their investment portfolio grows...so if a person has been able to invest 6 years at 33% then that person would have 2 years worth of salary and perhaps even 3 years worth of expenses (since they live off of only 70% of their salary) saved up just from the amount put in, and if the investment or parts of it do fairly well, then there could be some bonuses in there, even though we cannot necessarily presume investments will end up outperforming other places that we could have had put our money (including out performing how cost of living goes up), which can frequently be reasons for having financial and psychological cushions in order to better prepare ourselves for a variety of scenarios.
Yes it makes sense after a few years of investing 30% let's say it has been running for 3 years then the investment is already large of course it will be useful to cover urgent needs, but in my mind I want to perfect how investments and emergency funds should always be separate if it can be done.
Therefore I want to make sure that the emergency fund is already there when the investment is just starting and if it has been running for a long time it is clear that the wealth will increase and this will be a resource for me for bigger emergencies, so making sure it is important with the consideration that as the emergency fund must be in advance, the investment must go according to plan.
With you saying that some are starting to be shaken because of carelessness in the investment that is spread but what is chosen is shitcoin then it is a big mistake, shitcoin cannot be said to be diversified because this is not a long-term safe asset so avoid shitcoin and I will choose to diversify in other stronger assets such as property etc..
I can imagine how this will be consistent 30% for more than 5 years of course it will have a larger reserve fund, the resources it has will be stronger, I want to know the future scenario, because the plan is definitely solidified.