I have two apps on my cellphone, and the second one gives only 8 or 18 free coins daily while chapters there cost 35+ coins. So I had to buy coins every time I read a novel that is not free. From this perspective, WN is very lenient to their readers.
It gives free passes that can be used for 3 chapters a day. If a person not comfortable with it, then you can read only free works. There are plenty of them on WN with good quality.
For example, my novel has almost 2M views and 230+ chapters (long ones, I should say) and it's absolutely free because I didn't sign the contract with WN. If the work is free it doesn't mean that it has less quality it could mean that the author had his own reasons not to become contracted.
So if you don't want to spend money on the coins, then read free works only.
But if you like the story and want to read it, I don't see what is the problem to be grateful and support the author by spending some coins on that work?