Electrical-Plankton1

Yes you are correct

I switch back to either the S0 or S4 Stainless Steel

Makes no difference, The earliest supported WatchOS version compatible with iOS 17 is sort of technically Watch OS1, but as part of the pairing process, it updates the watch to 4.3.2 or above

Cant be done

Its something else as it is totally compatible with iOS 17 / iPhone 15

Why yes , someone else who agrees that it can be used !!

Some many downvoters here today lol

The typical downvoters are out in force - prats

iOS is backwards compatible with ALL released versions of WatchOS

An iPhone 15 pro max running 17.2 can pair with a Series 0 running 1.1 upwards

NONE of the Apple Watches so far have are unsupported in this way

Stop giving out false information .

Apple watches are not carrier locked

The loop is one length, the only difference is the size of the connector,

Just get the correct one for your watch, is you have the small watch get the 41mm, if you have the larger watch get the 45

You either need to talk to them , or get a new watch

Yes

This covers all the models

https://support.apple.com/en-gb/HT201263#:~:text=Press%20and%20quickly%20release%20the%20volume%20down%20button.,see%20the%20recovery%20mode%20screen.