Again, I am not holding myself out as some sort of medical expert on herd immunity, I was simply commenting on the intent vs. the actual outcome on this issue alone. They believed they needed a certain percentage. They took action on that hypothesis and did not reach that percentage.
Now, if we have a situation where herd immunity at a lower percentage is also effective, that would be great. But what Sweden wanted to accomplish, and why they did what they did, compared to the actual outcome in percentages, is that they fell short of the goal.
What I will say is this. They HAD a plan. Time will determine if the plan was the best or not, but at least they devised a plan and followed through. The US cannot even come close to Sweden's planning. We have no plan.