2. How would they find out that you lied?
3. As I also said in that post, I honestly don't think most companies even want to know about these vaccines.
I don't think that the question is appropriate for an interview and will likely not be asked. But if it is then answering "Not yet" is a good, generic answer and can't be taken to mean "Not under any circumstances.
2. How would they find out that you lied?
If they hire you and ask for proof of vaccination. More companies, not a majority but more, are requiring vaccination for new employees.
3. As I also said in that post, I honestly don't think most companies even want to know about these vaccines.
Most? I agree that most probably won't require it. But lie and accept a job with one that does and I guarantee your time there will be short.