You won’t find real discussion on Twitter. It’s an attention market, and thus discussions are not incentivised at all. I found way more interesting “unlike me” thoughts in real life than on any social media in the past 7 years (and before that I was just lucky for a few years). It’s not that they don’t exist at all, but the cost of finding these is magnitudes higher nowadays on the internet than off from that. Also, who wants discussions left most of social media years ago. Most of the smarter people whom I followed left every platform as their usage became more costly. Not just Twitter.