Cerebral venous sinus thrombosis is the very specific type of stroke that has a possible association with the adenovirus-carrier vaccines. It is also more common (both generally and in the suspected vaccine-related cases) in younger women. But it is rare generally – see Inside Medicine. What Are You Seeing? [COVID-19 medical news] - #3088 by ucbalumnus .
Most strokes are not cerebral venous sinus thrombosis, and it is not a surprise that some older people out of millions getting vaccines coincidentally have strokes shortly after getting vaccines, not because of the vaccines. Other typical coincidences include nursing home residents in poor general health dying shortly after vaccination, or toddlers being diagnosed with autism shortly after getting typical child vaccines.