1. Banking system acts as an intermediary between the parties of financial transaction same is the escrow system, it is an intermediary between the sender and receiver of a bitcoin.
The two work in similar way.
2. If the purpose of the escrow system is to protect and guarantee the safety of the transactions between buyer and seller of a cryptocurrency then while is it not a foundational part of the cryptocurrency network. I see the protection of such transaction to be very critical.
Pls, can we justify these two issues?
To be honest, I don't think the whitepaper specifically addressed this issue and the focus of the paper is more on the creation of sound money which is not controlled by a third party (a.k.a fiat). This is where the foundation comes in. Bitcoin is a decentralized sound
money, not a new escrow system. So, blindly saying that bitcoin is just the same with banks just by looking from one aspect is not right imo. A simple example, with banks they can hold your money and decide not to pay you if they found you're somewhat guilty by their own standards, while in bitcoin a transaction as long as it got confirmed then there's a high chance it will end on the receiver address.
Even if we compare bitcoin and bank case in terms of escrow, there are some differences. First, you can use multi-sig with as many people as you wish as the escrow. Of course, this has weaknesses too but that means you don't have to trust someone else completely, unlike a bank.
As for your second question, yes it is important, but I think the point satoshi making on his post is:
1. With irreversible transactions, the seller would be protected from scam such as double-spending, cancellation etc.
2. For the buyer, we can design another escrow system that uses bitcoin/cryptocurrency as the money (and this is done via several ways, multi-sig, trusted user on this forum for example, etc).
Because, in my own opinion an automated system should always be better than the human system.
You can't completely trust anything. Even if there's a godlike code that can act as your escrow, those are just codes. Sometimes it's buggy but works, sometimes it broke completely. CMIIW.