They are indeed but by the same token its incentive to get contracted so your work stands out even more is it not?
As above, it's not about site evolution it's about the fact webnovel is also a business, go figure some nicer features require them earning something too. Most online sites are the same, they give you the basic program, it works fine, but the higher end features require you to pay for them. In this case however it's just a matter of agreeing to make yourself and them money for those bells and whistles. Hardly unreasonable.