Looks fine in the demonstration area for the various weights below. There has to be some space between the lines if you were to use a router to make a wooden sign with these (the stated design inspiration).
Why would there have to be some space between the lines if you used a router?
Depending on the wooden sign material,
and the desired life expectancy of the sign,
close kerning might leave a narrow bit of
word that could warp and chip away after
a few years of exposure to the elements.
I guess I was hung up on the "use a router" bit. This is a problem with making a sign out of wood not about the use of a router.