To grow the social networks and contributions at HIVE, I agree with you the organic way as you describe is likely the best forward. I would think it is best to comment to other peeps on whichever platform you/we like to be active. I noticed at X, that commenting to others brings more views and receives more replies, than when I make posts in my channel.

The thing for me - and likely for most of the HIVE peeps - is that when going into meaningful conversations in other networks, time is perhaps the limiting factor. But as mentioned it is perhaps the best - maybe the only way - to get new genuine social networkers to HIVE.