Twitter removed RSS in 2013. Facebook removed it too. Youtube didn't remove it, but you have to go into the page source to find the feed link.
For "RSS is as alive as ever" to be true, it would follow that you'd expect to find as many people publishing their content via RSS as the case before. They're not. There are many, many, many derelict blogs, all effectively abandoned because their authors migrated to Twitter, intentionally/consciously or not.
or, it could be - just floating this - that lots of blogs are posting on RSS, /and/ twitter has gotten a lot more traffic from previous RSS users.
Your request for data is in bad faith, and you're commenting in bad faith.
What this means is that we have a moral obligation to support and push RSS in our work/spare time. This is something I now recognise I need to do at least.