Bitcoin should be aimed at long term always, investing aggressively in any slight market opportunities is just another form of trading because you would like to watch it go far beyond your buy price; Trading! DCA is all the best of you wish to keep a long-term investment.
No doubt the DCA strategy is a good strategy when it comes to bitcoin investment. You can buy bitcoin with the DCA strategy anytime without waiting for an entry point, but it won't guarantee you will hold your bitcoin investment for the long term. If you want to succeed in bitcoin investment and hold it for the long term, you need a steady income that will always cover your daily expenses and give you a discretionary income you will use to invest in bitcoin consistently and build up your bitcoin investment. If you have these two things and you discipline yourself to always accumulate bitcoin with your discretionary income, you will have no problem holding your bitcoin investment for the long term.
It is certain that investment strategy never guarantees or increases the chances of success in investment.
You are wrong, investment strategy really helps and guarantee or increases the chances of success in investment, there are some strategy you will use as an investor you won't succeed in Bitcoin investment because is not a good strategy for you, before you can succeed in your Bitcoin investment the strategy you are using to grow or accumulate matters a lot, there are newbies that are using the DCA strategy to accumulate Bitcoin if they start waiting for a dip to happen before they can accumulate will that strategy lead them to success definitely no, so strategy is very important when it comes to bitcoin investment because is part of the things that grantee your success.
Yes patience, consistency, determine are part of the things that grantes success in Bitcoin investment so also the strategy you are using.