So, after reading some through of those tutorials it appears I have been filling my cylinder ends wrong. I have been filling them with the method on the left, but I guess according to the tutorial the method on the right is better. Is this because the edge flows don’t terminate?
And would there be something wrong with doing it like this?
the old way you did it and the new way are both equal.
as long as the first and second loop cut have tangent curvature it is fine.
the second one is better if you not only want to cap the cylinder but
also dome it a little.
for that the first step would need additional loop cuts.
for UV unwrapping the second might be better to paint over.
the last one shows uneven face dimensions - not so good