This claim does not make any sense. The premise of banning abortions is to increase births. If the clot shot lowers fertility in women, then there are going to be less births while abortions are prohibited. This means that the expected results of banning abortions (more births) will not match with the actual results (less births). This data mismatch will cause people to seek answers as to why women are having less births while they should be giving more births, leading to further awakening about the clot shot. In this light it also makes sense why there's such an uproar about overturning Roe v. Wade, because the deep state does not want people to start digging into the reasons of the diminishing birth rates.