One of the reasons I love Notion is because of how easy it is to rearrange and transform things as they move through the creation process. When I'm creating content, it goes from idea description to first draft all in the same Notion page.
I think that the conversation around this is likely going to be skewed. If I search on Twitter for example, it's mostly people in tech angry because they already knew markdown. But when I hop into the Slack teams for my clients, it's all the other departments of a company saying they're happy they don't have to bring up the helper tool every time they want to format something.
I love Spark. I'm someone who rarely ever hesitates to spend money on software - anything that saves me time is worth my money. But almost every paid email client I've tried had huge gaps in features important to me or had a difficult experience. Their free apps keep me happier than any of the paid apps I've tried.