Well when one makes use of DCA strategy in accumulating Bitcoin let me say weekly basis, that person is automatically setting aside a fixed amount of money for Bitcoin before he or she even think of spending it on other unnecessary things. This habit lessens the chance of wasting that same money on unnecessary expenses that don't build long term value. We can say that DCA reduces additional expenses coz it enables one to prioritize Bitcoin savings over casual spending by channelling part of your income into something productive instead of letting that money slip away on things that won’t really matter in the future to come.
Just think of it in this manner, without DCA, a person who has like $10k sitting in his account can begin to start spending it on irrelevant things like maybe outing buying of expensive item and gadget etc. But if he had already dedicated a portion of his money like let me say $5k for Bitcoin each week through DCA, some of those “extra expenses( or irrelevant things) would never even happen coz he has already locked that portion into investment.
Look I get what you're trying to saying but tbh I think your kinda oversimplifying it? Like yeah DCA can help with discipline but it's not some magical solution that stops people from overspending.
if someone has $10k and they're the type to blow it on random stuff, they're probably gonna find other ways to waste money even with DCA. It's more about mindset than just having a system, you know? Plus your example doesn't really make sense $5k weekly for Bitcoin?? That's like $260k a year dude, most people don't have that kind of money lying around. You ain't gonna find those people easily either
And here's the thing that bothers me DCA can actually make people more careless with their remaining money because they feel like they're already being "responsible" with their investment. It's like when people eat a salad then think they can have dessert because they were healthy earlier.
Also Imo, what if Bitcoin tanks? Then all that money you "saved" from buying gadgets is now worth way less. At least with a gadget you actually get to use it and enjoy it. I'm not saying don't invest, but acting like DCA automatically makes you financially disciplined is pretty naive if you ask me.