Use comment magnets: arguable-yet-respectful questions, either/or possibilities, “cost this” prompts
https://andyitra784.image-perth.org/7-proven-ways-to-get-more-x-comments-using-engaging-content-and-buy-real-x-comments-wisely
Use remark magnets: controversial-but-respectful questions, either/or alternatives, “price this” activates, and micro-case studies. Make it convenient to reply to in one line, yet meaningful adequate to discuss.