I for one, I really think that either one should invest in a DCA strategy and try as much as possible to be consistent and disciplined about it. Or joining a signature campaign of this sort or rendering services of sort on sites that pay good dollars/crypto.
At least the coin, is earned from side gigs where a few coins can be also channelled toward fulfilling the HODLing plan. It doesn't matter whether the amount used to buy BTC at the time, its value is rewarding over time.
DCA is good for everyone to apply forever if it is for Bitcoin, because Bitcoin's value will continue to exist and will never just disappear if over time there is an increase in Bitcoin users who believe that Bitcoin is good. So it would be very good if we want to continue running DCA while still looking for side income as you said in several ways that can support us in getting income in life, because the implementation of HODLing will not be disturbed when we have side income that can be used for life.
Sometimes as an investor, you still have to be realistic, even though Bitcoin looks so promising, it cannot be separated from price fluctuations. Doing DCA is also not as easy as it sounds, because generally DCA will be ideal for those with a stable income every month. However, that does not mean that those who do not have a stable income cannot DCA, of course they can, but eventually anything becomes hodling because the initial basis for investment is stable income, while clashing with urgent needs will come and cannot be avoided.
I think some people who sell their stuff by accepting the reason why they don't have that patience of hodling Bitcoin is because maybe their business needed more money for growth. Like I know many business who sell bu receiving fiat they still reinvest the money into their business, this is just to make the business gets to a certain level they desire. One thing we should understand about Bitcoin, it is not every Bitcoin that is for hodling , bitcoin is also a currency that people can accept in exchange of goods and services, so it can be spent just as every money is been spent.
The more Bitcoin you have, the higher the demand in the market and the higher the price of Bitcoin and is considered rare. And generally rare items always have a high selling price. Bitcoin can be accepted by society as long as it is in the right place where people understand and know what Bitcoin is. On the other hand, not all people know about bitcoin, and some countries do not legalize bitcoin as a means of payment for goods and services. They only accept fiat as the only legal transaction tool to use.