I say something close to the same thing to people no matter what the BTC price, which is to get the fuck started, especially if you do not have any at all.
Of course, we can recognize and appreciate that the vast majority of people are in the no coiner category, but we might still want to have some sympathies on those people, especially because it takes some people time to figure out that bitcoin should be part of their investment portfolio.. even if they are still in early stages of building an investment portfolio...
So, yeah we might consider a lot of people to be precoiners rather than no coiners, yet at the same time, there are some people who seem to be in the category that you are suggesting who are trying to time the market in such a way that they do not ongoingly accumulate, just in case the BTC price does not go down more.
Sure, none of us really know if the bottom is yet "in" even though our having had touched nearly 2x our $15,479 bottom does bring a decent amount of confidence that the bottom might be in.. and it is surely possible that btc/satoshis will not be able to be at those kinds of prices anymore, and surely it is possible that even sub $20k will not be reached ever again, or sub $25k will not be reached ever again, or even sub $29k will not be reached again. We just cannot really know with any level of confidence, especially short-term BTC price movements.
We have been through some tough times in the last year or so, and surely there are ongoing attacks on bitcoin and even various fairly severe seeming problems with various macro-systems - including the stability of the USD.. and surely some of our future possible crises in the USD could end up having sever short-term downward pressures on BTC prices. and those are really difficult to know or foresee.. and surely many of us (including myself) find those to be buying opportunities rather than selling opportunities, even though surely those are scary times, and I am not going to lie about how uncomfortable it can be to be going through severe downward price moves, even when there had been thoughts that the "bottom may well be in".
Of course there are people out there who get too greedy for their own good.. .. and sometimes they can still profit from their efforts, yet historically, we have seen a lot of those kinds of guys waiting around too much for lower prices, not acting and even selling too much too soon.. or like you said the other extreme is buying when the price goes up rather than buying when the price goes down or just buying regularly no matter what is the price.
So there are a lot of weird perspectives, and the main thing seems to be that we try to create systems for ourselves that we have decent confidence are solid, and we cannot necessarily expect that others are going to follow our methods or that they will be able to figure out some kind of a meaningful long term BTC accumulation strategy for themselves.. even if it might vary from our own..
I don't expect to get into the heads of anyone else, and I do try to be helpful to their developing of their own systems, and people are going to tend to go their own way, and it likely will take a while, still, for bitcoin to really catch on.. and we still really have decently low levels of BTC adoption and people remain sceptical and concerned and even afraid of bitcoin.. even believing some of the bullshit that their governments, banks and financial advisors tend to not want them to buy bitcoin.