"That said no vaccines have been found to have an unexpected long-term safety problem, that was only found years or decades after introduction"
You do realize that you have spent this entire thread denying early negative results from the Covid vaccine, right? This is simply inapplicable, because people are claiming a whole host of negative side effects, which you are currently denying. There is data from VAERS showing that this vaccine is much more dangerous than other vaccines, which you are denying. There is data suggesting significant risk for pregnant women, which you are denying. There are a number of doctors shouting danger, claiming that the vaccine is harmful, which you are denying. Athletes were mysteriously going down by the hundreds, increasing in number over the same months as the vaccines were rolled out, which you are denying. The sentence above implies there is no negative data, but there is.
When early Cigarette data came out people also spent a long time denying it and refused to believe that they were killing themselves. It is sad, but true.
Also, as previously mentioned, the Covid vaccine is much different than most other previously licensed vaccines. Most other vaccines do not involve genetic manipulation and do not require boosters every six months. It's not the same mechanism. This is just a hope based on a leap of logic that it is going to turn out like other vaccines, and assumes that there is no current negative data. This is not knowledge that the vaccine is safe long term. They admit directly that the long term safety is "impossible to know". If it was possible to know based on the logic you gave then it would be possible to know, which they specifically did not state. What was given was a fig leaf to hedge your hopes on.