Of course knowing the update of the coin is very important for holders of long-term investments. I experience the same thing when I don't swap coins that I hold. and finally the coins I could not use. Following the project update is strongly recommended for holders.
Telegram groups will definitely help you to gather some information on what is happening on the coin that you are currently holding as of now. So, you better not to leave them since you will be notified if the coin that you have is rising up or has already a value and ready for selling. Do not just dump your coin and make sure that you sell it when the right time comes.