Almost every gun is a copy, in some iteration, of the original black powder cannons. They had barrels and fired a projectile, so people who make guns now, any guns, are all ripoff artists, right?
C'mon people...
Of course there will be similarities. Short of completely reinventing of the firearm there will always be similarities from gun to gun in a given size/type. It is inherent in the basic mechanics of the tool and the anatomy of the user. You can only configure a gun so many ways and still keep it useable when by those of us who prefer to remain human-shaped.
There are going to be similarities in ANY striker-fired semi-auto handgun, pocket or otherwise. They will all have a frame, a trigger, a striker, a recoil spring, and (probably) a Browning-style cam lock. Chances are they will have the same basic parts, all about the same size and in the same basic locations. There are only so many ways you can rearrange the parts inside a frame and have them work properly.
I looked at the exploded view earlier in this thread. They are two different guns. Period. Short of a few unavoidable similarities the parts are unique enough in appearance that it doesn't take a rocket scientist to see the difference. Does it appear that Ruger took a cue from Kel-Tec? Sure. But no more so than Kel-Tec took cues from the semi-auto handguns that came before. Evolution of funtion is part of the mechanical world, so get over it.
However, to see the difference you do actually have to
look, not take a quick glimpse followed by a knee-jerk reaction based on outward appearances. (That is, unless you like being in the same category as a bed-wetting anti who judges things solely by how you
think they look and not what they actually are.
).
Brad