Some of these content creators could soon loose their desire for legwork since there content doesn't get the attention they wanted.
This is true but what I also find is that people limit their legwork to what they are comfortable in doing. I know, i did this too and wondered why I wasn't getting engagement.
As an example I have seen some content creators who just post pictures of their hobbies now.
I see this too and it talks about their willingness to invest. Don't get me wrong, this is a social media still so there is room for that but, some people also start and end with that. Some lose interest in it very fast also. If they are really interested in their hobby, the reward shouldn't matter. If rewards matter, then they may have to explore a little further afield.
There is definitely the laziness factor. A post or a couple with nothing but a snapshot might actually be appreciated if a person posts frequently.
Loss of willingness in one's own work can be seen by the readers/followers. A question like 'Will I follow myself?' can bring some of our own slack to light.