What's so hard in saying the phrase "this virus has important differences from the flu so we need different measures"?
Okay think of it this way.
We have two kinds of flu that trouble us. We have pandemic flu, which is the really bad kind usually. Pandemic flu goes through the population fast because people don’t have (any/much) immunity. It usually kills a lot of people doing this. It grows exponentially in the population. It is a respiratory virus so it is quite hard to control, because breathing the same air as someone infected is all it takes to catch it.
Flu does not stay pandemic for ever. At some point, there is enough population immunity through vaccination or infection that it can’t cause that kind of damage any more. So it still circulates, but at much lower and less damaging levels. It turns into seasonal flu, that comes round every year. You may well have a had a descendant of the 1918 Spanish flu pandemic - you probably weren’t very ill with it.
Right now covid is more like pandemic flu. In a world where we have mass vaccination, plus a lot of immunity through infection, it’ll turn into something more like seasonal flu. Still around, still nasty, still kills some people every year, but nothing like the danger that it used to be.
Or it might be even better - it might turn into one of the other four common human coronaviruses, and bother us even less. But those probably caused pandemics when they first crossed to humans too.