There are likely members who are transacting with their bitcoin, and they can transact directly onchain or maybe they use a lightning wallet.
I doubt that it is a good idea for guys to be getting scared away from transacting with bitcoin in the real world, when there are opportunities to do so. A lot of the power of bitcoin comes from being able to transact directly with other people and with no one being able to stop such transaction.
If I have chance to use my bitcoin, I would like to do it directly than converting my bitcoin to either fiat currency, cash or stable coin before using it for payment. It is inconvenient and also costs me more fees from on-chain to trading fee.
However, I NEVER bring my Bicoin fortune around only because I intend to transact my bitcoin directly for something. It's risky and I only do it with my hot wallet that contains very small part of my Bitcoin capital.
Sure maybe in your hot wallet you might ONLY keep $50 to $500 worth of bitcoin, depending on your location, yet if you had some special purchase, maybe you would carry some higher amount, or maybe if you were buying a car, and the car costs $5k, you could pay it in person, or maybe you tell the person that you are sending them the $5k in advance to going to pick up the car, so that you don't have to carry the $5k worth of bitcoin.
So even if their main storage of bitcoin might be kept separately and private, there could be situations where guys are either transacting with large transactions or guys might be using a wallet that has a high BTC balance
For big fund storage, it must be stored in cold wallet, airgap wallet while hot wallets are risky for big fund storage.
For big value transaction, how many Bitcoin confirmations is important too.
How many Bitcoin confirmations is enough?1 confirmation: sufficient for small payments less than $1,000.
3 confirmations: for payments $1,000 - $10,000. Most exchanges require 3 confirmations for deposits.
6 confirmations: good for large payments between $10,000 - $1,000,000. Six is standard for most transactions to be considered secure.
10 confirmations: suggested for large payments greater than $1,000,000.
It also depends on what you are buying.. if you are buying a house, then the house is not moving, so if the payment is defective, then the title of the house would not have had validly transferred, and maybe the person cannot move in until the transaction is confirmed. I am not disagreeing with your points, and sure private parties can decide how many confirmations they need, and from my perspective, it is not too likely that the chain is getting rolled back so 1 confirmation is likely good enough even in large transactions... but yeah, so far in my bitcoin life, I have not tended to have transactions that are greater than $10k.. at least not so far.