This is true. It will affect stability but it hasn’t made it so bad that I haven’t been able to adjust to it. And my seat is about as high as you can get it. But being taller it’s worth it to not feel like you are squatting all the time.
Its especially nice on a long float or a weekend of floating. But on those days I have the canoe loaded down and that totally removes the stability problems. Not that it’s really a problem when it’s empty, it just takes a few minutes to get used to the difference.
I’ll take a picture of mine when the suns pops back up.