The dip is only an advantage or an opportunity for an investor to make use of by accumulating enough Bitcoin so is not bad accumulating when it is dip where it is wrong is when an investor wait for the dip before accumulating.
The strategy you are using to accumulate is the DCA strategy for it helps you to accumulate Bitcoin consistently either weekly or monthly as long as your discretionary income is intact and hodl for long 4-10 years and above.
I like your advice about buying the dip but
certainly not the specification of 4-10 years, we should be flexible about this and it depends on the investor's plan and the prevailing market condition. I don't see myself HODLing my position for too long if the market is not breaking its ATH for months and even years, I would rather plan a smarter Bitcoin investment by carefully studying its condition for a while and average what it would likely do afterwards.
By that, I would have known the best place to regularly buy it when it dips and the regular place I would liquidate it when it reaches certain highs to repurchase at certain lower levels again. If such has been done since the beginning of this year I wonder how much the investor would have realized already. However,
if Bitcoin can get lower to about $15,000-$20,000 again, HODLing is still good for it because the level is lower enough to give you a rest of mind and still earn well for you over time.
Again, if Bitcoin dips very well like that, I see it as pointless DCAing, and I would commit all my money to it at once in such a situation. This is to hint that DCA is smart in some market conditions but not when the market is already very cheap, what do you intend to lose in that situation?
You seem quite unrealistic if you consider that $15k to $20k to possibly be in bitcoin's cards, and it may well be the case that BTC prices in the $30ks or even $40ks or even sub $55k will never be seen again.
Of course, the higher the BTC price the more likely that such price will be revisited, but several of the lower prices become more and more difficult to reach, so such ideas of waiting for low prices in order to buy more bitcoin become problematic, especially for anyone who is new to bitcoin and who is still in fairly early stages of building up his bitcoin stash...
Another thing is that for many newbies, it can take 4-10 years or longer just to build a decently sized bitcoin stash, even with ongoing buying of BTC, so if they are in their first 2-4 years of buying bitcoin, they may well not even have been able to establish much of a bitcoin stash, so they surely might not be in any kind of a position to be considering the extent to which they may or may not be profitable, rather than just ongoingly buying regularly.
Maybe the bigger dilemma for the newbie concerns whether he should keep buying BTC if the BTC price is shooting up quite fast, so those kinds of going up conditions may well seem to be more of a dilemma as compared with the BTC prices going down, at least in terms of ongoingly buying to try to take advantage of being able to buy BTC at lower prices.
I suppose the dilemmas are not merely limited to BTC prices going up, yet also questions of whether value might be held back in order to have more money for buying on dips that might not end up taking place, so each of us surely has to consider those kinds of matters, and also some folks (including yourself) also consider that it may well be good to sell BTC with attempts to buy back at cheaper prices, so even when folk sell and even if the BTC price is going up as they are selling, there surely is nothing close to guarantees that the BTC price will come back down, so it becomes even more difficult for anyone who is employing selling techniques when their main intention is to be accumulating more BTC (yet some folks don't even know their main intention, since they might not know if their main intention is the accumulate more BTC or to accumulate dollars, so there can be confusion also in regards to intentions that folks need to work out in order that they at least have better ideas about what their goals are).