The bit about delta easily by passing vaccines?
Why ask for a source and then not read it? For any other tl;dr's:
"Getting vaccinated doesn’t entirely prevent onward transmission of the virus, particularly in the form of the now-dominant Delta variant.
And there is good evidence that testing positive for antibodies
doesn’t mean you are completely protected against reinfection."
"Even if we vaccinated every single adult in the country – and we are some way off that goal – that would only add up to about 70 per cent of the entire population.
Taking into account a range of factors like this, modellers at the University of Warwick said last week that as much as one third of the UK population could still be susceptible to the Delta variant."
"That suggests that around two thirds of us do have immunity – which brings us close to the 60-70 per cent herd immunity threshold some scientists estimated at the beginning of the pandemic.
One big change since then is the rise of the Delta variant, which is much more transmissible than early forms of the virus and makes those early estimates look too optimistic.
Modellers think the R number for the Delta variant could be as high as 6 to 8 – meaning a single case can infect six to eight other people.
This implies that we would need to vaccinate 83 to 88 per cent of the entire population, including children, to reach the herd immunity threshold and stop the illness from spreading.
And that would only work if the vaccines were 100 per cent effective at preventing onward infection – which we know they are not."
(This just happened to be the first Google result when I looked, by the way. I'm sure there are plenty more.)
As I say, the bypassing isn't serious, but it's there, and so is the transmissibility to more vulnerable. And since vax effectiveness declines with time (Tim Spector, latest Zoe vid), the situation doesn't look like improving.
This is just a fact of Covid life. I'm more interested in opinions on my final sentence to be honest.