People mostly are doing DCA on this current market situation. It is not certain what will happen next. Many saying it's an indication towards the nest bull run, and others are saying that it's a bull trap. As we are seeing pump on the market right now, it will take correction in some point. So DCA will prevent from huge loss.
One last thing about investing on alts. They may not bounce back up like BTC in the bull run. So it is safe to avoid those shitcoins. Focus only on Bitcoin.