Compound return fallacy is the bigger framework.

— stock DRIP… There is widespread brainwash about the miracle snowball of ECP (exponential compound return) via DRIP

• AA) For example, with XOM (or SPY), my uncle re-invests dividends every quarter. If my aunt chooses to receive dividends but do not invest further, then yes she would get no “snowball”.
• BB) In contrast, I choose to receive dividends, but later at my own timing[1] invest the same [2] amount into XOM or unrelated stocks [3].
• BB^AA prognosis ….. if I invest at least the same [2] aggregate amount as my uncle, and at least once a year[1], I won’t lose out to my uncle.

[1] My frequency is sometimes higher sometimes lower than quarterly. I always prefer to time my entry. About half the times, the DRIP default timing is not ideal. If my timing decisions turn out to be inferior to the default, I won’t blame anyone, but this won’t be a valid explanation for the “snowball” or the absence thereof.

[2] The amount I invest is often bigger than my uncle’s tiny dividends. High dividend years are over, so those “snowball” stories are outdated because nowadays the smaller dividends make the snowball growth slower.

[3] Usually, my “reinvestment” amount goes into a stock different from the original stock (XOM in this example), often a stock outside SP500. This diversification is usually beneficial, though it breaks the compound return paradigm. In fact it can beat the compound return snowball.

My uncle’s robot uses market orders, which are inferior to my limit orders.

One advantage of automated (robotic) DRIP is tcost. (Tcost is a different concern in recreational investing.) In view of that, I may need to reduce trading frequency..

— splurge .. Somehow the brainwash theory assumes that most investors who opt for cash dividend would spend the payout. Suppose the typical investor Cody spends $5000/M on average. When $770 dividend received in June, how much would Cody spend in that month? The brainwash theory assumes answer is $5770, because the dividend would feel like a windfall to be spent.

Well, I think the answer for some people is $5000. They save the windfall.

Actually, some investors simply leave the dividend payout in the brokerage account to buy more stocks. If they withdraw the cash dividend, then indeed there is higher chance of spending it.