I guess my personal opinion is that if we are going to curl | sh, I'd rather be up front about it and not hide it in layers of obfuscation... (That is, in fact, what reviewdog's action does, modulo allowing wget instead of curl and the precise location that it gets installed to)

It just feels like we are adding steps and not getting any benefit from it, and just making it harder to figure out what went wrong if it does go wrong (though the counterargument there is that we would have other people looking for the error simultaneously).

It does look like there was a temporary problem affecting some PRs where the install script required an argument but that appears to have been reverted such that no argument is equivalent to "latest"

I was thinking if they change the URL it's one less thing to maintain on our end, and I think having other eyes on it so bugs get reported and fixed faster outweights us having to track down something by ourselves when it goes wrong. There are reportedly 1.9k repos using the action, so it is widely used.