When can we say aggressive buying? When we invest with our full or some less amount of our discretionary income, then we can call him an aggressive investor. But always buying so aggressively is not right at all. If you always buy aggressively, then you can put your saved Bitcoin at risk. For a new person, investing 5% to 25% of his discretionary income will be the right decision and it is very good to maintain the continuity of investment. For example, if you invest with your full amount, then if you face any kind of financial crisis, then your only option is an emergency fund. And if you invest 5% to 25% of your discretionary income, then you will have some money left and if you face any kind of financial crisis, then you can deal with that crisis with it.
When talking about buying Bitcoin aggressively, it's not a terrible idea entirely, as long as you are buying it from your discretionary income, then you shouldn't be bothered, just that some folks over do it to the extent that it start having a negative effect in their abilities to take care of other basic needs, aside that, it is good.
Additionally, when buying aggressively like that, you should make sure that your emergency and reserve funds are huge and are in good shape, so that you wouldn't run into trouble financial in the nearest future.