No, not really. The point they are trying to make, based on a dataset that is explicitly classed as unsuitable for this very kind of comparison, is that double-vaccines now have a negative efficacy compared to no vaccine at all. This could become true if a large enough percentage of double vaccinated let their immunity wane and then refuse to get the booster, but again, as per the report you cited, the current data shows that double vaccinated people are significantly less likely to get infected and to transmit infection compared to the unvaccinated. For that reason I can't say it gets truer by the day.
Sounds extremely plausible.
Speculation on my part, but I'd imagine a double vaccination would suffice to get a Covid pass for several months, until the immunity starts to wane and then you would probably have to have a booster to keep your pass.
Italy's pass is valid 9 months from your second jab, I can't remember if Qatar's is 9 or 12 from your second jab. These time periods would obviously be subject to revision, but I can't see why you would have to have more jabs to 'catch up' if you have only just started having vaccines. Certainly in the countries I'm familiar with you don't.
I don't know who says which number of jabs is necessary and why, because i haven't been following it closely, sorry. As with other points, if you have any links so I can digest these comments in context, I'll be happy to comment on them.
I think there's a decent chance I had Covid in early March 2020, but I can't be sure. I don't think my antibodies would be recognised now, almost two years on. Anyway yes I am happy being jabbed, I wouldn't say regardless of the frequency, but so far I've had two vaccines in March this year and will be getting the third shortly, which is fine by me.
I'm over 40, I'm physically fit and in shape but I am a smoker, and weighing up the risks from Covid (assuming I haven't had it) and the limitations I would have to deal with if I wasn't vaccinated, it's a fairly easy decision for me. To be honest the **** I put in my lungs every day and the microplastics in every animal and every body of water I consume will probably see me shuttle off this mortal coil in the next forty years at most, so I'm happy to take my chances with the vaccine.
No idea but as a guess remain roughly the same.