The idea of HODL is entirely up to you and your greed level. If you wish to have trust in the project, then, its entirely up to you.
Before one can make an investment decision, either trusting the project or not should be part of the things to be considered before going into that coin, as there are a lot of fake projects out there whose intentions are just to rug pull.
That is why people are always directed to make their investment decisions wisely and choose coins or tokens that have some credibility. Bitcoin is one of the most highly recommended, and I believe that's where this topic is channeled.
Holding is never to be considered greedy, as we all have our reasons for buying and holding Bitcoin. There are people out there, and their main objective is to just buy and sell and take profit where necessary, which I believe most of the time is not really a good way to go. When it happens that they have hit their price target, instead of taking profit as they had planned before entering the market, they decide to wait longer in order for the gain output to be a little bigger, but when the reverse becomes the case, such an action could be considered greed.
But when one's plan is just to buy and hold as many bitcoins as he can afford, even when the price hits ATH, they still decide to hold and accumulate more. That's not greediness; they are actual hodlers who don't care about price but focus on how many they can accumulate within a certain period of time.