Just because you don't understand it you don't have to belittle people for their opinions. And yes, even poor people are allowed to be heard without judging them for being poor.
I don't think this is the right place for this kind of discussion. But yeah even people with financial stability can be against the system for good reasons.
I used reddit for the past 7 years. And I honestly feel like even back then discussions were barely possible. It always felt like an accumulation of popular viewpoints and everything else was just downvoted to hell.
And once you pass a certain userbase threshhold growth will happen automatically. It is just how social media works. So I don't agree that reddit's popularity is a good indicator for it's quality.
I am honestly not sure if that is the correct approach. This feels like you are trying to force people to migrate over here. Why not just add the link as a supplementary information instead of the only one. If someone actually wants to get off Reddit then it will be helpful but otherwise it won't annoy people for no reason.