Yes ATH is not permanent it is only a high price till present time so in future bitcoin price may be many times more than that so real holders never think about ATH. The supply of Bitcoin is limited but the demand is unlimited because so far not everyone has started using Bitcoin worldwide yet the price of Bitcoin is high and when Bitcoin starts to be used by most people worldwide then the price of Bitcoin will be higher. So holding only for long term is always a good decision
ATH can be a temporary highest price or permanent high price. For the coins which still have good progress on its price growth, they can have a new ATH someday. But for the coins that are likely stuck, it can be a permanent ATH because the chance for a new ATH to be very small. If you checked some coins on the CMC or CoinGecko, there are few coins that didn't reach new ATHs in the previous bullrun season (2021). However, if it is Bitcoin, I'm very sure that the current ATH is a temporary highest price. In the next halving time, the price of Bitcoin has a big chance to increase drastically. At that time, it is very possible to have a new ATH in BItcoin.