They mention this potential downside explicitly in the blog post. It sounds like they actually believe this is a good thing as it signals to junior employees that would need alot of support that they cannot provide it:
> The way we’ve set up our levels, people in the early stages of their careers can get bigger titles and raises more quickly at other orgs than they can at Daily. This will likely be a deterrent to some early-stage candidates, but we are ok with that for now. While we are excited to bring in early-career people once we have the structure to support them, we aren’t there yet, and probably won’t be for a while. We don’t want to make the mistake of hiring high-potential people we then under-serve, especially if they’re from groups typically excluded from tech.
> The way we’ve set up our levels, people in the early stages of their careers can get bigger titles and raises more quickly at other orgs than they can at Daily. This will likely be a deterrent to some early-stage candidates, but we are ok with that for now. While we are excited to bring in early-career people once we have the structure to support them, we aren’t there yet, and probably won’t be for a while. We don’t want to make the mistake of hiring high-potential people we then under-serve, especially if they’re from groups typically excluded from tech.