Edit: Ironically my comment is misinformation since I though this was about covid but its not, ignore the original comment below.
---------------------------------------------------------------------------------------------------------
The issue is that this game is based off of outdated media reports, nowadays its an accepted fact by the scientific community that the covid vaccine did little to help and that it caused side effects in many people.
Its silly that games like these still vilify objective facts, and I say this as someone who took the 2 pfizer shots.
Finally, herd immunity is an objective fact, the issue is that it would have caused many to die especially those who were older or immune-compromised.