Um. No.
In Scottish piping, a slow air is usually a regularly structured tune, like Hector the hero.
http://www.abdn.ac.uk/scottskinner/display.php?ID=JSS0176
It’s got 16 bars in each part, and it’s played more or less regularly (i.e., according to the time signature.) Piobaireachd grounds are never structured that way (equal parts, repeated). They typically have two bar motifs that are grouped perhaps:
AAB ABB AB
or
ABCD CBAD CD
Piobaireachd is very formalized. Most of us only ever play established tunes, many that date back to the 1800’s at least. We play them exactly as they appear on the page. In the last century, only a handful of composers successfully added to the tradition.
More to the point though, most airs use a recognizable harmonic progression that moves through some chords and resolves (not infrequently on the repeat of the tune). Piobaireachd, on the other hand, does not resolve. It usually oscillates between two adjacent tones. G & A or B & C or whatever.
And, in as much as the oldest traditions of Gaelic Scotland are sourced in the migration of the Gaels from Ireland in olden times, might it be fair to suggest that the Ceòl Mór holds (and reflects) the olden Irish air complex (symbiosis amongst different types of air)?
There is a harp manuscript put down by a Welsh harp player in the early 1700s. To me, it is clearly very related to piobaireachd. Either piobairechd came from what he (Robert ap Huw) or else both came from a common ancestor. The music ap Huw notated is a very formalized theme and variations system. The urlar, followed by variations, with the urlar returning between variations (as was performance practice in piobaireachd in the past). The variations become more complex as the tune goes along. And it does that two tone oscillation
Although this seems common sense from today’s hindsight, theme and variation as a compositional device, was a new form in the 1600s, but these harp tunes go back to the 1500s, at least in title. As far as I can tell, this older form of music, which most likely originated in Ireland, has left no trace there.