And you do realise that every single person who works at your bank can bring up your statement at any time and have a gawp if they were so inclined?
Not if they want to keep their job. Most bank computer systems will track individual access to account details, and if you don't have the authority it can cost you your job to look at other people's accounts.
But back to the thread.
A bank account is not reliable in any way to judge whether someone can afford something or not.
You can have more than one account.
EAs and landlords do not generally have the financial training to make sense of accounts.
And the short period of time they ask for, eg 3-6 months, doesn't give any sense of how the account really operates.
These are all comments and thoughts put forward by others, and I totally agree. I have a financial background.
Credit checks cover a longer period of time and can flag up stuff that a bank account simply wouldn't show. References from previous landlords are also a more reliable indicator.
And things can change so quickly. I know someone who lost a job and up to that point everything had been paid on time, but afterwards it was a different story. No way could a landlord have been able to see this happening from a bank account.
And my own bank gave me an overdraft I've never actually used, or even asked for, so having an overdraft facility doesn't indicate any either.