I don't even think knights should cost 1 komp point.
for perspective, here are some things that are straight up worth 1 komp point:
1 nightscythe
1 farseer
1 venomthrope
1 stormraven
1 aegis defense line
saying knights aren't worth a comp point is equivalent to saying that all of the above are significantly more powerful than a knight, such that those need to be limited, but knights don't. i do not agree with that statement.
the real reason they need to cost comp points is to limit how many people can bring and with what. if they cost no points, i can bring a normal 3 komp army and just add a few knights to it. is that going to be just as easy to beat as the 3 komp army without knights? i highly doubt it.
i personally think knights should be more than 1pt, but i'm totally fine with them being 1 with no option to take a second.