Ninite isn't an expensive paid Adobe Flash updater. It's a useful sysadmin tool for automating several painful processes. I think it should exist and other companies should not be able to bully them to shut down. As a consumer you can pay if you think Ninite's functionality is useful or not if you think it isn't.
On an ideological level, I would look at whether they are stealing content and reselling it or just automating something the user would do for him/herself. It sounds like automating to me.
I make scripts to automate my workflows all the time, including the flash installer. (Though I don't download it as part of the script, I have pre-downloaded it and put it in a folder to use. So I have to manually get the latest before I run the script on a batch of machines.)
On an ideological level, I would look at whether they are stealing content and reselling it or just automating something the user would do for him/herself. It sounds like automating to me.
I make scripts to automate my workflows all the time, including the flash installer. (Though I don't download it as part of the script, I have pre-downloaded it and put it in a folder to use. So I have to manually get the latest before I run the script on a batch of machines.)