First of all do you know what HODL means?
HODL is used when referring to hold the cryptocurrency rather than selling it.
Holding cryptocurrency is no good because it means you don’t have a knowledge about trading, for me, you can do scalping trading and increase your holding by it and gain profit.
I suggest that all in the Crypto community must learn the basic trading fundamentals. There are free tutorials anywhere. Don’t be lazy, think big.
Everybody cannot be traders. The people that trade and those that hold provide balance to the market and they have their own individual objectives that they believe that course of action is the best way to go about it. Holding is not all bad so also its not all good. I have seen people who hold for just six months and the coin turned out massive and I have equally seen same too that it worth zero having being delisted on major exchange sites over time.
Rather than discouraging holding, you should advocate the right coins to hold. Imagine everyone is dumping and no one is buying, I guess you would even left the market and the value would have dropped drastically. Basic knowledge about trading is good but it involve more than that to actually make decent returns as its not as simple as it seems.