Aggressiveness is fine in investing but I don't think there is any need to be aggressive when it comes to holding your investments for a long time. Aggressive means that the investor will not think twice to sell his investment, I think if he is so aggressive he will not be able to hold his investment for long. Before investing, when the investor thinks too much about what time of the market he should invest, what time he will invest, when he wastes extra time, basically the investor should be aggressive for that time.
If you just started your bitcoin journey, investing aggressively is good as long as it wouldn't affect you so that you can use a short period of time to have a significant amount of bitcoin. It is when you over do it, that is you invested with almost all your weekly income, forgetting that you will need funds for some financial needs that is when you will end up destroying your goal because when you are short of funds, and an emergency arise, you will be forced to sell your bitcoin at a price of is not of your will.
There is no time that is late for Bitcoin so being new to Bitcoin does not mean you have to be so aggressive without planning your finances. Remember there is no deadline to beat in Bitcoin investing, so it is best we go about it at our own pace in a fashion that is conducive to our finances as well as our needs.
Buying the dips is not a bad strategy even when executed with bulk funds but doing it as though you want to catch up on something at the expense of planning might be problematic in the long run. This might also make holding for long a kind of challenging. Maybe you are focusing on buying enough Bitcoin before the halving. Well, if the finances are there there I don't see a problem buying aggressively but care must be taken not to buy in a way one can hold without selling under panic.