Bitcoin was not created to replace fiat. Rather, it is meant to be a viable alternative, and it Is achieving that gradually. If not for this periodic attack of the mempool by ordinals, Bitcoin transactions is cheaper than fiat transactions.
Of course. BTC as another alternative investment that is interesting and provides a level of comfort for those who have owned it for the long term, but if someone is still a typical conservative investor, they might prefer to stay away from BTC and prefer stable and safe assets such as gold or silver. One thing that is still on the mind today is why the price of bitcoin is certain to be higher regardless of the periodic mempool attacks by the ordinal in the future because of other factors, namely the uncertainty of the value of fiat currencies.
Yeah, some people prefer traditional ways of investment, and some see BTC as a superior choice - it boils down to what each person believes in and what he sees as more viable for himself.
Overall two can be used for investment, but BTC has more potential.