Technology today can survive a very long time without the help of humans. They are going fully automated,they can function very well on their own. Bitcoin system can and is already working without much use of Human efforts. You don't have to sit at your computer all day trying to mine bitcoin, machines are designed to do such task, why you take the rewards. I feel the only thing most modern technology would need from humans might be maintenance as over time they might need updating or replacement of hardware components.
That's a fundamental misunderstanding of what 'the system' even is. You're confusing the protocol's execution loop - validating transactions, building blocks -with the entire ecosystem that makes it possible. My node will process blocks automatically, sure.
But who do you think wrote the Bitcoin Core client? Who maintains it? When a vulnerability like the 2018 inflation bug (CVE-2018-17144) was discovered, did the 'machines' patch themselves?
No. A handful of developers had to secretly coordinate a fix and get it rolled out before it could be exploited to print infinite bitcoin.
Your statement implies the software and hardware are static things that just need occasional 'maintenance' like changing the oil in a car, which is just flat-out wrong. The environment is actively hostile.
There may be constant attempts to attack the network, both at the protocol level and at the infrastructure level.
Plus, there are ongoing debates I'm following about what opcodes to enable or disable. The P2P layer needs work. My wallet software needs updates to support new standards like Taproot.
Saying it's 'fully automated' ignores the thousands of my and other devs' human hours spent on development, review, testing, and deployment that keep the network secure and functional.
The protocol is an abstract set of rules; the implementation is a living software project that would rot without my constant effort and the effort of others.