There's also an interesting flip-side to this issue:
Suppose, for the sake of argument, we were to conclude, on the basis of this article demonstrating the ubiquity of HEK-293 testing on OTC and prescription medicines (IF in fact these tests were performed by interested and relevant pharma/manufacturing companies/scientists), that it must be permissible to take the death jab in certain circumstances (necessity and proportionate good).
Would it not become immoral/sinful to take ibuprofen or tylenol for a headache or toothache, since there is no necessity or proportionality?
It seems like a no-win situation:
If you want to be exempt from the COVID gene serum on the basis of HEK-293 testing, you should also shun all the other medications listed in the article above (presuming those tests were performed by pharma/mfg companies to market the drugs, which is yet to be determined).
On the other hand, if you allow the covid gene serum (and all the other medications listed), but can only take them in necessity and proportionality, they would seem to be off limits for most of the reasons people use them (e.g., pain control is not necessity; there is no proportionality; etc.).
An exceedingly difficult and complex issue, this vaccine business!
For this reason, I continue to suspend my final judgment on the issue.