Surely, it is possible to end up getting a passive income from investing, yet you still have to spend time building your BTC stash up to a significantly high enough amount in order to start to employ some kind of a sustainable withdrawal system... Even though it is possible to begin to employ some kind of a time-based sustainable withdrawal system with almost any amount, it is likely not going to be a good thing to start to employ any such time-based sustainable withdrawal system when the amount of value in the holding is not very high.  I personally also believe that as long as you are valuing your BTC holdings at bottom prices, such as the 200-WMA, then you likely could start to employ something close to a 10% annual time-based withdrawal system with bitcoin as opposed to 4% annual time-based withdrawal systems in the traditional investment systems. but still if you are barely reaching your amounts then it likely is safer to either not start to employ any withdrawal system or to employ lower levels of withdrawal rates until you have clearly reached a status of overaccumulation.. where the value of your holdings exceed the amount that you need.

So, under traditional systems, if you were to want to have around $6,666 per month in income, you would need to have $2 million to be able to withdraw at a 4% annual rate; however, with bitcoin if you are able to accomplish a 10% annual withdraw rate, then you only need $800k in order to achieve the same monthly withdrawal rate.. and so personally I still say that you should be valuing your BTC at the 200-WMA rather than valuing it at spot price in order to determine when you have reached such BTC accumulation threshold, which currently you would need right around (or more than 20.5 BTC) in order to achieve at least $800k in value in line with the 200-WMA, and most likely you would be safe to perpetually withdraw at a rate of $80k per year or $6,666 per month in a passive income kind of a way.

Personally, I would prefer to error a bit on the side of overaccumulating before starting to employ such an ongoing withdrawal strategy, and surely if you are close to the goal but not quite there, you might even decide to start out withdrawing some fraction of the amount, and let BTC grow to reach your amount, so for example if you need 20.5 BTC in order to reach your goal and to start to withdraw at your target rate, but you ONLY have so far accumulated 17 BTC, and if no longer want to build your BTC size and you want to start to withdraw, then maybe you could withdraw at less than half the rate, such as $3k per month, until the value of your remaining BTC increases in value to the amount that would allow you to withdraw $6,666 per month. It may take a year or two to reach such 200-WMA valuation status that it would allow you to withdraw at your target rate of $6,666 per month, yet in the meantime you could start to withdraw at such lower $3k per month rate and let your BTC continue to grow (that is with the assumption that you cannot or don't want to continue to build the size of your BTC stash).....and of course, the lower the level of your accumulation cushion (and you are not in overaccumulation status) then the more risky it becomes to start to engage in aggressive levels of withdrawal, even though there still could be ways to reasonably expect to make it to your goal without even relying on guarantees that the 200-WMA will continue to go up at the rates that historically it has done.. and so far historically the 200-WMA has not failed to go up at least 20% in any annual period.  You can see my fuck you status chart for those historical 200-WMA performance numbers.