Sure, the earlier that any of us get started, then the more likelihood that we can get our shit together and figure out some kind of a BTC investment (accumulation) strategy, and then to employ, learn and build upon such strategy. 

There is no guarantee that the BTC price is going up from here, and there is no reason to suggest that it is too late to buy bitcoin, even if the BTC price goes up to $40k or goes up to $100k.. the main issue that comes from buying on pumps is a likely need for a longer time horizon in order to feel more comfortable about being in profits, and it can take a decently long time for anyone to be in profits, so in that regard, I cannot really disagree with your suggestion that it might have been better to buy below $30k rather than above $30k.. but at the same time, no one can turn back the clock, and they have to start to buy/accumulate bitcoin from the place that they are at - rather than pondering about yesterday or contemplating if the price might go down.. so if they don't have any coin or they are low on bitcoin, then it is likely better that they get started sooner rather than later in terms of both figuring their strategy and starting to stack sats.