The majority of people with Long COVID were vaccinated. (Because the majority of people were vaccinated and vaccination only slightly reduces chances of long COVID).
Also, many long COVID cases happened before the vaccines even came out.
So I don’t think your attitude of victim blaming really works here.
The majority of the NIH’s Recover Cohort (the largest studied cohort of people with Long COVID) was vaccinated.
Recent literature reviews put the risk of getting long COVID at about 10% for vaccinated people and 12% for unvaccinated. So definitely it helps, but it really isn’t a miracle. And the studies showing vaccines had a therapeutic effect on long COVID itself failed replication.