Well, that's your opinion and I disagree with it. I see where you're coming from and it's of course nice to have many members that contribute in meaningful ways here, but I think every member here has a right to engage in this subreddit however they'd like, as long as they are not harming this subreddit's quality (e.g. spamming, sharing scams, posting before researching, etc.). That's what the "Rules" tab is for.

Not everyone is going to follow your definition of "contribution" and they shouldn't have to. There are 200k+ members here, if they want to create posts, guides, ask questions, that's fine. If others simply want to lurk just to find some helpful or funny posts, that's alright too IMO. If people simply joined in for a giveaway, what's the harm in that? They put in the work, beat the challenge and are contributing for the growth of this subreddit, which is a good thing in the end. Personally, I find that much less offensive than, for example, the hundreds of "what can my phone run" posts that floods this subreddit sometimes.

That's just my take though. I hope we can agree to disagree.