The linked article only indicates that antibody production should continue for a long time, but that's only one factor in robust long-term immunity. The rate of antibody production and the set of proteins that the antibodies target are also very important.
It's good news to be sure, but it doesn't yet prove what you seem to want it to.
There have been far more breakthrough cases of fully vaccinated people than there have been confirmed reinfections.
Yeah, but there are vastly more vaccinated people than people have been confirmed infected even once, so that doesn’t really tell you anything. (Currently, the number of vaccination doses being delivered per day globally is about 1/5 the total number of confirmed global COVID cases.)
We'd need to compare the number of confirmed reinfections divided by confirmed infections with the number of breakthrough cases divided by the number of fully vaccinated people.
Its also worth noting the confirmed reinfection count is on a much longer time scale than breakthrough infections. So we currently have more data about the long term natural immunity than we do for vaccinated immunity.
Yeah, that’s what the immune system does.
You simply don't need a vaccine to help your body produce antibodies if you already have them. Not just for covid 19 but for anything.
Don't let anyone shame you or pressure you into getting a vaccine that you're not comfortable getting.
It's not strange at all. Human beings have probably been doing this since not too long after languages developed:
Do 'X' because 'Y', since 'Y' is in agreement with my opinion and personal interests of you doing 'X'.
'Y' may be science, religion, math, emotion, whatever. The point is that many people will push information they want pushed with and later contradict themselves if need be as long as they can consistently push the information they want. The arguments and rationale are usually secondary, not the primary driver.
Politicians do this a lot. It's lying in the form of intellectual dishonesty or sheer ignorance. Many highly religious people push firm accordance with their religion or their interpretation of their religion, while allowing their own desires to shape those ground rules: they pick and choose which rules to follow literally and which to interpret, and so on.
There are a lot of people out peddling things in the name of science but they don't understand science: evidence, process, uncertainty, etc. When it comes to COVID we've learned a lot but there's still a lot of uncertainty around a lot of aspects in various studies and we need to understand that with humility and act accordingly.
I'm quite happy admitting that I do not know anything other than the basics and trust in experts in their respective fields instead.