I’m a bit out of the loop but I thought heroku died or is languishing under Salesforce. That’s my current perception of everything and no longer see it recommended in HN threads. Hopefully this does not come off as an attack (it’s not).
That's a good way of describing it. Another issue is they've locked a whole lot of useful (practically required these days) features behind requiring an enterprise account - the trouble is that "enterprise" isn't just paying a whole lot more (if only). Enterprise involves getting involved in Salesforce style opaque fixed priced annual paid upfront contracts etc. It's just not a cloud provider any more at that point - you know the whole elastic thing the cloud was supposed to do.