Failed as in the vaccines, that were being advertised as being 95% effective with no talk of any boosters only 6 months ago, no longer provide any protection at all.

As for the vaccines forcing mutation, SA is only 25% vaccinated so that doesn't work.

Have the vaccines succeeded in preventing many people from dying? That is something for history to judge. There just isn't good enough data on vaccine deaths to judge that at the moment. The problem for COVID vaccines is that whilst they may some people from dying of COVID, not many life years are saved because almost all the COVID deaths are concentrated in the very elderly. Meanwhile vaccine injuries are a looming iceberg because they aren't being properly tracked or recorded. The number of random cardiac failures in athletes is well up this year and eventually people will stop being in denial about the reasons. The long term damage from this programme can be judged in five or ten years.

However, if Omicron does display Delta as it appears to be doing very rapidly, we can say that at most the vaccines were useful for maybe 6-8 months. Bearing in mind you aren't "vaccinated" until your second dose and there's a gap.