Perhaps I should rephrase:
Isn't categorically stating that the cause is a Covid infection a year ago exactly as paranoid and unsubstantiated as categorically stating that the cause is a Covid vaccination a year ago?
Having been infected with COVID-19 infection is a serious risk for clotting issues that increases with the severity of the infection. A SARS-CoV-2 vaccination is an extremely low risk. It's paranoid to fear serious side-effects from any of these vaccines. It's not paranoid to fear long term health issues from even a mild COVID-19 infection.
Declaring the source of the medical issue described to be the result of COVID-19 complications may not have ruled out all other possibilities, but it is backed by available evidence (or at least the lack of evidence for competing hypotheses) and is both sound reasoning and vastly more plausible than thinking it might be due to a past vaccination.
To present them as equivalent is to conflate a virtual impossibility with something, that while not a sure thing, is very likely.
(Also worth noting that blood clot concerns were taken at least seriously enough with the AZ vaccine for it to affect the official vaccination policy, so the milk/hand pain analogy is hardly a fair one)
The problems that would torpedo any vaccine are many orders of magnitude less common than clotting issues resulting from COVID-19 infection. Any remotely credible correlation between a vaccine and a serious medical emergency has to be taken seriously, even if the overwhelming majority of such reports are later found to be extremely rare side-effects, or discovered to have no causal link at all. Unsafe vaccines don't inspire investor confidence or win repeat delivery contracts, after all.
The rate of serious clotting issues from the AstraZeneca vaccine (which isn't even used in Trinidad and Tobago, IIRC) is about 1-per-100k, and that has been more than enough to cause a shift to other vaccines (which have a much lower rate of such issues). It's also in the same ballpark as the rate of deliberate poisoning, and probably not far off the odds of coincidentally developing lactose intolerance that results in inflammation that could cause joint paint that may be noticed first in old wounds...that second estimate is a fairly wild and fanciful guess, but still presents a considerably more plausible scenario than an unspecified SARS-CoV-2 vaccine causing a stroke months after the fact.