The cyclist appears somewhat detached in his behaviour. This could be for any number of reasons. He could have a medical condition I.e diabetes or mental health issues or he could be under the influence of alcohol or recreational drugs. I would have thought that if he was fully compus mentis his reaction may have been more active.
The taxi driver appeared to be considerate and careful in his driving. I have, however only seen this video and none of the others he may have posted on you tube.
Few years back we had this fella come into the restaurant and queue for food. His behaviour was very odd and a number of people made comments about "drunks", "weirdo" etc. I saw this and thought "this man is ill" so went up to him, put a hand on his shoulder and asked if he was OK. He gave no answer and sort of shuffled towards the people in front.
All of a sudden he went down like a sack of you know what. One customer half caught him mid fall, a staff member rushed for a chair. We sat him down and after a first aider came over he started to come around. Turned out he was diabetic, had low blood sugar and didnt feel well so had rushed down to us to get some emergency calories in him.
Medical peeps checked him over, we gave him food and he was fine after that.
I also agree the taxi driver appears to be driving OK. I agree with Copper cyclist about the parked cars blocking access. I also agree muting would probably be to protect data on the radio or sat nav directions to fare's home etc