Sigh, what Wallys. There is zero independent thinking, nor is anyone thinking about Pfizer 2nd shot adverse reactions (and AZ too). Now do you trust the local hospitals ER dept to run platelet tests fast, and administer what if clot-buster drugs in a timely manner. I don't. Both boosters are marginal, and we now know TIME alone seems to boost effectiveness. I would prefer to waive my rights , and get one of each. Govt replies - oh we don't know.. Well in .au there is no universal vaccine adverse reaction insurance.
Before any shot, I will boost on Vits D(Has B12 and Mg as well), Zinc and C, and Iodine, elderberry and sfa alcohol, and plan not to work the day after. Nobody is asking what these clot allergic people have in common. I will guess lack of sleep is one factor, diet and blood tests may pop out another.
Ultimately the lesson is different doses for different age groups and weight. The goal is to prevent deaths, and ICU. One shot will do.