Yes exactly those points are indeed valid and I sure have seen a few quitting Steemit as they were not getting anything out from it and they were not getting anywhere,tired of being explaining things to them that Steemit does not works this way ! Like it's said It is an oppurtunity you have to grab it and make it your own and use it to build up your foundation in it !
Yes it will take time and everything does .Nothings comes easy !

and again I am glad that I joined Steemit and I proudly say I am a member of this great community !