Yes, I think swopping over on an established site will have some potential downsides. Especially for these types of ones.
To override the default one I think youâd need a plugin [ETA not true, see post below] (but I think the same is true for muting the notifications). Theyâre not editable in the UI as I think itâs easy for people to do some real damage to their site with a poorly amended one. The custom badge sql is behind a hidden site setting as an added safeguard.
I think a similar feature request has come up before too, which can add more weight to it:
(There may be others too)
A setting in your user preferences similar to the âNotify when likedâ one could work and keep it simple. Something like âNotify when badge earnedâ - never | first time a badge is earned | always