When you are talking about pumps, you have to talk about dumps. Pumps and dumps are two sides of your investments and like two sides of a paper. No dumps, no pumps and vice versa. If you have good entry points and good exit points, you get profit. If you have bad entry points and bad exit points, you get loss. DeFi or not it does not make sense.

DeFi is the same as ICO, IEO, it is not a party for every investor.