You are just repeating yourself Spud, and your arguments are no more compelling than they were previously.
One of the major points about vaccination is that it ensures that when someone is exposed to the virus that their immune system is already primed. This has a number of benefits.
It does not ensure this in all cases. Vaccines are supposed to be used either on a small part of the population or when there is no chance of infection while building up antibodies. There is a reason for this. When a highly mutable virus meets an incompletely primed immune system, fitter strains will be selected which will be transmitted and eventually become dominant. The immune system needs to be completely primed before exposure to the antigen. That requirement cannot be sufficiently met during a pandemic.
If however this virus meets a naive immune system in a healthy person, it will nearly always be eliminated by that person's innate antibodies and natural killer cells before his acquired antibodies build up sufficiently to select more infectious strains as described above.
So if a small part of the population is vaccinated while there is a risk of infection, there are still enough unvaccinated healthy people whose innate immune systems will prevent more infectious strains from circulating.
First, of course, it makes the infection likely to be less serious, so less chance of hospitalisation and death.
Yes, but at the same time the virus is being transmitted by vaccinees and undergoing natural selection due to the unfavourable environment. So long term these people are still at risk of serious disease from more infectious strains.
But also it make it more difficult for the virus to replicate and reduces viral shedding and therefore the likelihood for others to become infected.
Thirdly with less infection and less serious infection there is a reduction in the number of viral replication events, each of which may result in a mutation. The fewer mutations the less likelihood of a new variant of concern arising that may evade immunity (whether natural or vaccine-induced).
This is the case once the vaccinal antibodies are primed, but not when they are suboptimal or waning, at which point the virus will at some point overcome these antibodies and the infection rate will increase again.
In every respect vaccination is good and more vaccination is better.
Not when used while infection is occurring.
