The mRNA has to reach the cells under the radar of the immune system. The cells that produce the spike proteins alarm the immune system by themselves, like they do with every other alien protein.
The blood clots caused by the virus are a reaction to damaged blood vessels (infected endothelial cells and cells damaged by spike proteins). The blood clots caused by the vaccines are caused by antibodies that attach at platelets at a spot that triggers their aggregation.
Everything you wrote here is wrong.
This is an old study about adjuvants in mRNA vaccines. They cannot put the adjuvants outside the LNPs because the immune system must be kept calm until the mRNA is inside the cells. Therefore, they tried to add adjuvants inside the LNPs but found out that this is just not necessary: Mammalian cells can sense foreign mRNA with so-called pattern-recognition receptors and alarm the immune system for themselves: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5439223/
VITT mechanism: https://www.jthjournal.org/article/S1538-7836(23)00512-3/fulltext
There is no old study about adjuvants in mRNA shots because this is the very first time one has been used on humans.
The immune system is not able to react to the shots before they make it into the cell.
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