Of course, each of us is responsible for our own level of aggressiveness, and we should not let pressure from online or groups affect our choices in that there is nothing wrong with being aggressive as long as we do not end up overdoing it. If we overdo it, then we have to suffer the consequences, and it might be 10 years down the road that we realize that we cannot turn back the clock an hopefully we did what we were able to do without overdoing it and taking ourselves out of the game due to our own overly aggressive screw up(s).
if I may ask, how does someone really decide where to draw the line between being aggressive enough to see good gains and being too aggressive to the point it turns risky?
one thing you should understand is that there is nothing like been "aggressive enough to see good gains" when it comes to long term holding of bitcoin, just be consistence in buying bitcoin with your discretionary income you will reach your accumulating target and then hold it for 4 to 10 years or longer. Been "too aggressive to the point it turn risky" is when you start accumulating bitcoin with the funds made for handling your basic needs and expenses or when you start buying bitcoin with your emergency fund after you must have exusted your back up all the name of buying the dips, so no matter aggressive you want don't overdo it just as JJG had said earlier only buy bitcoin aggressively within your level don't go above your level.
The rate of aggressiveness depends on the amount that you can be able to top up your DCA buying and this is where investors that doesn't understand financial management gets it wrong. In aggressive buying investors need to be smart, they should know if they can afford to buy aggressively, if it will affect their planned budget for their other expenses it is better to stick to their regular DCA accumulation. But if they can pull funds from their other expenses to buy the dip without affecting them negatively then it's a smart move.