Also you claim people never lost when investing in bitcoin, and this cannot be true, investing in bitcoin, as solid as I believe bitcoin to be, still contains an inherent risk, and you could be forced by circumstances to sell your bitcoin for a bad price even if you do not want to.
Yea, that's for those who didn't plan properly on the amount that they are to use to invest in bitcoin from their discretionary income that will not make them sell their bitcoin before their own will. For one to be successful in his bitcoin investment journey and hodli for long over 10-15years and above. That investor must have an emergency funds up to 3-6 months that will be kept aside so that incase of any emergency that occur along his bitcoin journey, he can use such funds to take care of it, to prevent him from dipping hands into his bitcoin when it is not yet time for him. You should know that in life we are bound to face uncertainties, and you need to prepare and plan for such in order for you to progress in your bitcoin accumulation. Emergency funds acts as a backup to your bitcoin investment, there is also need for reserve funds, which will be used to take care of some heart desires, in order for you not to use your emergency funds for heart desires. Anyone bitcoin investor who does not have his emergency funds and is investing in bitcoin without building his emergency funds along side with investing is only gambling and wasting his time.
Finally you claim DCA to be risk-free, which again is not possible, as even something as simple as getting out of bed has a risk, so DCA must have it too, even if it is a very solid strategy to use by newbies and experts alike.
DCA is only risky if you over invest aggressively with it, apart from that if you use 10% of your income, or the right amount from your discretionary income to invest using DCA on a long term bitcoin journey with regular accumulating bitcoin weekly or monthly. It will not put pressure on you and you would not feel as if you are investing, and gradually your portfolio will increase overtime. It is the best method for beginners to accumulate bitcoin to build their portfolio with passage of time.