Yep, pretty much.
I have both HN's and open waterer for first couple weeks.
VN's are a PITA, IMO... leaky and can't set the vessel down.
Have tried them, not worth the trouble.
It takes some balance, @CT11 when very young they should also have an open waterer until they get the hang of the nipples.
Ehhh, bit if a fad.
There are several causes of pasty butt, Active Cider Vinegar may help.. or not.
Clean fresh room temperature water is best, IMO, along with a properly...
If you live somewhere that it freezes, HN's are definitely the way to go.
Plus I don't like the VN's because they are prone to leak and you can set the vessels down.
This is about cage bottles, but there's some tips here for installing the HN's...
I have horizontal nipples in the brooder from the get go......but also an open waterer there all the time until about 2 weeks when I start removing it for much of the day.
By then a few have figured out the nipples and others follow suit.