Hodl strategy doesn't always work with every coin. We should only hold good coins that are worth holding like BTC, ETH. Holding shitcoins that are worthless will lead us to heavy losses.
Its true, different coin should be different strategy because have different fundamental. Hodling strategy only can implemented in good coin with big daily volume transaction and already have working product. Many altcoin in market are pump and dump coin and its not worth to hold for long term.