On how we might preach the whole process to be, investing by lump summing isn't suitable for a beginner, how should he know at what price is comfortable to purchase, even a well knowledged investor might slightly enter from a wrong position which may hinder the progress of his profits.
Yes, I agree that the lump-sum strategy is not suitable for newbies, but at some point, a newbie or new investor in bitcoin can lump-sum to increase the size of his bitcoin holding. As long as you are investing in bitcoin for the long term and using the DCA strategy, you will never accumulate bitcoin at the wrong time. The DCA strategy has you covered. Even though you accumulate bitcoin at a high price and the price later drops, the DCA strategy will allow you to still accumulate bitcoin at that time.
Apart from what you said, there is also another thing that a beginner needs to pay attention to and that is about the knowledge of what he is collecting and when he already knows that what he is collecting is the best asset of all time like Bitcoin.
I know that before anyone starts any business, the person needs to have a clear knowledge of the business so that he or she can flourish in it. But when it comes to bitcoin investment, a newbie or new investor in bitcoin doesn't necessarily need to gain knowledge about bitcoin; he or she can accumulate bitcoin, but as time goes on, he or she can learn about bitcoin in his or her accumulation process. The basic thing newbies need to know is about their finances and not about bitcoin.