Only Slack's integrated view of history is acceptable to nontechnical users. Also to technical users like me who don't want to mess around maintaining and talki

Only Slack's integrated view of history is acceptable to nontechnical users. Also to technical users like me who don't want to mess around maintaining and talking to bots. I believe the dismal UX in your suggestion is the reason Slack is popular. By contrast, "it just works" and it works consistently across all communities, making for a compelling product.