Even if bitcoin still not consider as legal tender still people can use it whatever they want as long as their government didn't ban it.
The opposite is existing and true too. Even Bitcoin is considered as legal tender in a country, there are people who use it and there are people who don't mind to use it. You can not force others do things they don't like and don't want to do.
If there is no prohibition against Bitcoin, it's fine enough to use it without fear to be put into jail. That is enough to continue expanding adoption for Bitcoin at local and global scales.
We actually don't need bank if we decide to do so since we can store our money in our homes but we need a good vault to make it safe away from people who want to do bad things about it.
You will likely need good vaults to store your hardware wallets, your seed phrase, private key backups against physical damages like fire, water, earthquake, heat.
With Bitcoin, good practice to create your wallet, back it up, store backups safely, you control your coins and fund. You do no longer need any central banks to secure your fund and approve your transfers. You can do it all by yourself, secretly and very safely.
Security checklist