I would agree with Gina. It doesn't make warfarin out of the question. It just means that you should incorporate it into your discussions with your doctor in terms of possible later impact. If the doctors feel the conditions are temporary, they wouldn't have any effect on your health on ACT, and thus no effect on your decision.
Otherwise, it's intelligent to consider these issues in the larger scheme of anticoagulation, to determine if they are liabilities and how they should be handled.
As far as personality patterns... Personal experience and observation over time are valid tools. Trending is part of what I do for a living. The personality traits mentioned are from observations over the years, and are plainly generalized (see: "In general" at the start of each sentence). Insofar as they go, I think they indicate the trend. Remember, a lot of people don't get to pick their own valves, so valve recipients will fall out of those general patterns not just by the nature of variance, but also because their doctors were the choicemakers.
It's important for people to consider their general natures for valve choices. If your friends and doctors are all urging you to get a mechanical valve as the sensible choice, and you hate doctors and are already bad about taking medications because you instinctively resent them due to your personality, maybe you shouldn't listen to your friends. And vice-versa, of course, if a tissue valve will leave you feeling that you have surgery hanging over your head all the time.
And if you disagree with my interpretations, bringing it up in posts at least encourages people to explore the concept. Hopefully it will help people realize that they shouldn't suspend their personalities during the decision-making process due to pressure from the many well-meaning entities that surround all of us. We are the ones who live with the choices in the end.
Best wishes,