If you hold your money long term in regular checking or even bank savings accounts you will become poorer, there is no doubt about that. Inflation will eat away at your purchasing power. You will struggle to find any product a regular bank can offer that will help you beat inflation. Poor people save, smart people invest. Put your money in crypto, stocks, real estate.
The thing is that, ignorance has eaten very deep into some people minds to the extent that they aren't ready to make positive move about their choice of investment, I think some people ignorantly keep their money in their bank accounts making excuses like they arent much conversant with Bitcoin investment and all other crap they say and thereby indirectly keeping their money idle while inflation helps them to make their money valueless, the truth is traditional bank or will I say financial institutions has absolutely nothing to give to us, there was a time in my country that buying if shares was a hot cake but you know what, I can tell you that as we speak, it is a disaster, they interest rate in banks is just like when you keep your money at home, the banking system is just a trash zone, Satoshi did very well, atleast for those that can't afford real estate or stock these set of persons can concentrate their investments in Bitcoin since they can start with any amount they can afford until their income grows, I think it would've been a continuous indirectly stealing by financial institutions to their customer if we weren't left with good alternatives like Bitcoin and all the rest, atleast now in my country one can have their funds in BTC or any of those investment you mentioned if they can afford them, then when one needs fiat, they can actually convert some amount they have in a separate wallet and trade them, then use their fintech online banking to receive the funds in fiat to enable them solve whatever need that arises with this, one will still have their investment intact, when BTC rise you benefit without having to be given any peanut interest as banks do monthly or yearly.
One most interesting thing you've said here is the rise of bitcoin price to yield interest for users who saves their funds on the bitcoin. The banks might yes give some interests rates probably on the annual or monthly basis but those are just trick to make you feel relax with the mentality of assuring you your funds safety under their custodies while taxes may eat up those little interests and inflation will be now and then devaluing the worth of your funds in the traditional monetary system.
Anyone holding their entire life savings on fiats for the long term without considering it stability could be waste of time and values that's supposing to be utilized to maximize incomes by investing on resourceful assets like bitcoin, real estate or the stocks where holds the edge against inflations must be acting out of ignorants or illiteracy with the unrealistic expectations that things will get better while inflation is slashing the value of their money in the bank.