I don’t use those buttons much myself. Probably matters less on active public communities and more for private internal communities where people are more likely to read everything?
If it does matter, no one cares about it on mobile that much because we only show it on the bottom of the list there. Last time that came up was 2015: The "Dismiss" buttons should be at the top on mobile.
It seems to be the norm for email clients to hide it behind a button with other options, and I also like being able to do this for unread:
instead of this:
Anyway, one more thought outside of my tangent… if we keep it as is, “Dismiss New” definitely feels too large if we match sizes, but simplifying to “Dismiss” makes it more reasonable.