I asked this earlier, but no one addressed it.
If vaccinated people catch C19, have severely reduced symptoms, and go about their lives while contagious...
Doesn't that spread the virus quicker than unvaccinated people who catch C19 and stay in bed for a week or two because they feel like shit?
Is there faulty logic here or is it a taboo subject?
It's possible, but it's all psychological theorycrafting speculation. Both vaccinated people and unvaccinated people can be asymptomatic with COVID, and while vaccinated people are probably more likely to have an asymptomatic experience, and assuming your premise is the only thing going on that influences behavior, we don't know if the prevalence of asymptomatic infection in the unvaccinated group is that much smaller to even make a difference practically.
We could also just as easily say that unvaccinated people are more likely to be less cautious and do things like social distance, or wear masks, so that in the time period they are infectious, they could have infected lots more people because they are more likely to have been engaged in large congregations without masks. The behavioral patterns are too complex to accurately extrapolate, and there's too many variables.
What you
can do is look at the data, and see if there's a relationship between a high vaccination rate and case rate or severe illness/death rate.
Look at this comparison between a few different countries. (It's inelegant due to a lot of other variables like strictness of restrictions, mask wearing compliance, population density, etc, but it's still somewhat useful)
Explore global data on COVID-19.
ourworldindata.org
On the left, the countries are listed in order of fully vaccinated people per capita. The chart shows how many cases there are. Generally speaking, the countries with higher rates of vaccination have lower rates of cases per capita. Of course there are exceptions like Israel, but that's because Israel was one of the earliest countries in the world to get started with mass vaccinations, and as their recent data shows, the protection wanes over time, which is why they are giving out booster shots now.
However, what does not wane is protection from hospitalization, severe illness, and death.
Hospitalization:
Explore global data on COVID-19.
ourworldindata.org
The United States has the least percentage of people vaccinated, and they have the highest rate of hospitalizations. Despite Israel and the UK's high case rate, they have a much lower rate of hospitalization compared to the USA.
Deaths:
Explore global data on COVID-19.
ourworldindata.org
Same with deaths. Israel's death rate is still a little high, but again, they're experiencing waning immunity from being the first adopters of the vaccine. Other countries with high vaccination rates have relatively low death rates.
Also look here at data from just the United States.
www.mayoclinic.org
You can hover over each state to see their case rate, and generally speaking, lower vaccination rates tend to be associated with higher case rates.
Look here too:
CDC’s home for COVID-19 data. Visualizations, graphs, and data in one easy-to-use website.
covid.cdc.gov
I added in the chart the 3 highest vaccinated states (Vermont, Massachusetts, and Connecticut) and the 3 lowest vaccinated states (Wyoming, Mississippi, and Alabama)
Look at how high the case rates are for the 3 highest vax states vs the 3 lowest vax states.
Now look at the deaths. See how much higher the rates of death in the unvaccinated states are vs the vaccinated states.
In conclusion, while I acknowledge that the scenario you posit is plausible, there is nothing to suggest that it actually makes a difference in reality, and this is furthermore reinforced by the data that shows that places with higher vaccination rates have lower cases and lower hospitalizations/deaths in general.
Any questions?