By all means 'extend' it for a short time but with a sunset clause no later than May 2022.
The arguments about serving 'local democracy better', 'reducing impact on the environment' etc. are somewhat fatuous masks for removing the cut and thrust of personal face to face argument in local matters. If allowed to continue indefinably local politics will resort to inaccessible politicians, who may not even be residents, making local decisions in a compromised video environment moderated by self appointed Clerks.
The right for members of the public to attend, in person, council meetings (of any type) should be retained as sacrosanct, this cannot be served by video conferencing where a potentially biased individual holds the Mute button and can remove opposition views from being heard or propagated.