"Can create conditions" in the sense that any actions that perturbs a system can have that effect.
With, for example, antibiotics, resitance is quickly lost in their absence. Why? Because it's a costly adaptation to a need that no longer exists.
By the same mechanism, adaptation to the vaccine–if it happens–will by definition tend to be net-negative for the virus' fitness in unvaccinated people. Otherwise, that adaption would also happen without the virus.
All that's entirely theoretical, of course. Because the vaccine, despite the breakthoughs, still prevents the vast majority of infections. And that effect swamps everything, including hypothetical Quergedankenexperimente.
But, of course, they'll run with it, seeing how it's eaten up here as well. Personally, I'm no longer losing sleep over it since everyone I care about has been vaccinated, and most of my future attempts to explain evolutionary biology will be on the theme of "Darwin Awards".
With, for example, antibiotics, resitance is quickly lost in their absence. Why? Because it's a costly adaptation to a need that no longer exists.
By the same mechanism, adaptation to the vaccine–if it happens–will by definition tend to be net-negative for the virus' fitness in unvaccinated people. Otherwise, that adaption would also happen without the virus.
All that's entirely theoretical, of course. Because the vaccine, despite the breakthoughs, still prevents the vast majority of infections. And that effect swamps everything, including hypothetical Quergedankenexperimente.
But, of course, they'll run with it, seeing how it's eaten up here as well. Personally, I'm no longer losing sleep over it since everyone I care about has been vaccinated, and most of my future attempts to explain evolutionary biology will be on the theme of "Darwin Awards".