Well to be honest, i do agree that free readers really can't demand much to webnovel to give more freebies and the likes. Free pass and other rewards were already quite generous as there really is no ads in this site/app which is the main/major income for most site/app.
But i also agree that free users still can demand things like quality content, the fulfilment of promises, etc. This thing is not only the free readers right but all readers right. So many trial reads that honestly was chosen with (mostly) bad criteria in mind, some people complain about not getting coins from unchoosen trial reads, and many other things that i couldnt begin to list was things they rightfully allowed to demand. Those problems(and many more) i just listed was things that damages the platform integrity and reputation, reducing readers, authors, and translators confidence in the platform which in turn slowly/fasten the destruction of the platform.
Remember, in ANY business, you need to mantain an ecosystem which all in it benefit. If not slowly that ecosystem will breakdown as more and more of its components leave/die and no balance could be created. Once it break down, it will be a near impossible dream to rebuild it again.
There is a reason why things like genshin impact can flourish greatly in a short time and create a huge amount of fan base in it.