Let's make this clear.  If you stash is appreciating in value more than you are spending, then that is practically (for all intents and purposes) the same thing as passive income because your stash holds its value (presumably if you are measuring the value of such stash in dollars).

Don't get diverted into believing that your BTC has to "earn" more BTC in order for it to appreciate in value..  That's nearly pure bullshit designed to get you to believe that you cannot maintain and spend from your own stash and maintain its value (in terms of dollar worth).

Remember bitcoin is designed to pump forever (of course not guaranteed, but there is a pretty damned strong track record, already), and we could even plot out how acquiring 250BTC in 2013 or even in 2015 would be worth more in 2020... and you could have even been withdrawing 1% per quarter from your 250BTC stash, and you would still be way better off in terms of dollar value of your stash including having more value in 2020 then you had when you purchased those BTC.  Do I need to provide a chart for you to see it?