The market is in a bearish mode right now, so that must be true but in terms of accumulating or investing, it is actually better to do it as early as possible because the asset might also increase overtime. Be it leverage or investing, both has risk and small amounts are recommended at them. Investing has two types and that is ; one is short and one is long.
So you can always invest for the short-term only if you think the long one is boring but it was also the long-ones are the ones that must be highly profitable. You might have made some mistake last time but that makes you learn something mate, not nothing. We are one the new year now and the time to try again.
That's not what shorting (aka
short selling) or longing means though. It has nothing to do with short or long term.
But you do you in terms of accumulating. I personally don't see it that way as we are talking about altcoins here. and we are probably just starting the dip.
Sure you can get it with discount compared to ATH, but after something drops, it can always drop more and you might get it -97% cheaper depending on the coin. And with that drop, your past investment at the first drop is worth nothing.
Remember that from -97% loss you need 3 233,3% gains to get back where you were. Percentages are funny that way.