There are no one way streets blocked by these restrictions.
> The videos I've seen from the "conspiracy theorists" show residents sabotaging blockades in a residential area.
Those are anti-LTN protests.
LTNs are for eliminating through traffic from residential neighbourhoods by selectively blocking through roads. Effectively they turn a residential area into something more like a typical American or English suburb, which are usually built without through roads to prevent drivers using them as shortcuts to avoid congestion on the major arterial roads. No LTN prevents people from driving out of their own neighbourhood. The plans being described here aim to block arterial roads in Oxford to through traffic whilst allowing buses, taxis and some other traffic to pass, so have a wider impact than any individual LTN.
Oxford has extremely limited road space even on arterial roads - the city grew organically & the road network was established in the medieval period - this plan is an attempt to reduce through traffic on these roads in order to make enough “road space” to allow public transport (buses mostly) to make more efficient use of the available capacity.
Not sure why the conspiracy theorists have decided to make Oxford their place to protest all this stuff, but they seem to have decided that we need saving or something.
All the rest of the stuff you quote is stuff that particular people might like to do, but none of which is being planned or implemented here in Oxford. Nor is it likely to be, without the backing of the local population: This scheme is being implemented by democractically elected counsellors, all of whom the local population had the opportunity to eject in recent elections where they were opposed by anti-restriction candidates. A small minority may be making a great deal of fuss, but the voters don’t appear to agree with them.