The vaccine didn't cause a hole in his heart. It was likely congenital. Congenital heart defects not showing symptoms until your 40's or 50's isn't uncommon. But we are hardwired to connect events.
Vaccines can and do trigger things in some people. The vaccine court is filled with cases where you can see the things happened after a vaccine but it is hard to prove it was from the vaccine.
It happened to me. Not a Covid vaccine. It started a cascade.
Meanwhile, I just had a 100K surgery ( and $$$ still climbing) that turns out I didnt have to have. The vaccine didnt trigger the condition for the surgery but it did create the storm that caused imaging to be done.
And they still don’t know what is wrong with me
And we start all over again....thank god I have insurance- even if it is crappy Obamacare.