The opposite is true:

  These 444 cases of blood clots are after an estimated 24.9 million first [Astrazeneca] doses, and 24.2 million second doses of the vaccine in the UK. Of the 444 people who developed blood clots, 80 died. Six of these deaths occurred after the second dose.

Source: https://www.bhf.org.uk/informationsupport/heart-matters-maga...

  Up to 23 November 2022, there were 554 suspected cases of myocarditis or pericarditis reported in the 18 to 29 age group following the vaccine. This is an average rate of 31 reports per million doses.

  In the 30 to 39 age group, there were 470 cases suspected cases of myocarditis or pericarditis reported in the same time period. This is an average rate of 27 reports per million doses.

  Studies looking at myocarditis and pericarditis after the vaccine have not found any increased risk of death or cardiac arrest, compared with being unvaccinated. A large study of 4 million vaccinated people in Denmark, published in the BMJ found there were no deaths or diagnoses of heart failure in people who were diagnosed with myocarditis or pericarditis after being vaccinated.

Source: https://www.bhf.org.uk/informationsupport/heart-matters-maga...

A higher rate of myocarditis in the highest risk groups compared to blood clotting, but there is a more than an order of magnitude difference in the severity of blood clotting vs Myocarditis. In addition, blood clotting from the Astrazeneca Vaccine is thought to be incidental to immune response development, while Myocarditis with all covid vaccines is related to the strength of the immune response and is also a symptom of COVID-19.