You can't put in your title that you think people wouldn't get vaccinated if their risk of disease was low, without letting people discuss the benefits vs risks of vaccines, because that's obviously a massive part of the equation. The risks of the vaccines are even lower than the relatively low risk of covid for most people, and the benefits far beyond your own personal benefit of not getting it. So obviously it's a factor.
The OP was also worded as if the calculator could actually predict your individual risk accurately - like a thought experiment where you did know what would happen to you. In reality, even though people's risk might be low because of their age group and health, we all know that Covid is so totally unpredictable and the risks of serious consequences to random people in the low-risk groups matter. There is also a lot we don't know about the longer-term effects that might not appear straight away, like lung scarring etc., even to people who seemed totally asymptomatic, so again, this sort of question can be nothing but a thought experiment, as we simply don't know the actual risk.
A lot more is known about vaccines and how they work.
And whatever the writing style, agenda, etc, or potential journalist, people feel they have to keep responding to things like this, even if they are suspicious, because they end up spreading doubt and misinformation, and it benefits everyone if the other side of the issue is presented in a rational way.