Slender -nn being "ing" was only ever specific to a few dialects. In Munster usage of "ing" for -nn only really occurred in Cork. In Kerry they always said just a slender -n. Listen
to recordings of Pieg Sayers for example.

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The dialect I use is Cork Irish.
Ar sgáth a chéile a mhairid na daoine, lag agus láidir, uasal is íseal

and in Waterford (an Rinn).

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Is fearr Gaeilg na Gaeltaċta ná Gaeilg ar biṫ eile
Agus is í Gaeilg Ġaoṫ Doḃair is binne

Actually, I tend to view a strong palatal glide before low vowels in words like ceart as something of an overpronunciation.

To my ear, pronouncing ceart at "cyart" would be a bit like pronouncing fear as "fyar" or bean as "byan." The first letter of ceart, fear, bean etc. seem to be only slightly palatised.

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Táim ag foghlaim fós. Fáilte roimh gach aon cheartúchán.

there's a natural glide in "ceart" because the slender c is pronounced in the back of the mouth and the "ea" in the front.
However there's no glide in bean nor in fear because the f and the b are pronounced with the lips, ie. in the front of the mouth, just like the "ea" itself. Glides appear when two sounds that follow each other are pronounced in two opposite places in the mouth (broad consonants have a back resonance, slender ones have a front one)
I don't know if it's clear, but anyway, pronouncing "kyart" is normal, pronouncing bann and farr is normal too (however, in certain dead dialects as in the Glens of Antrim, I think they would have said fyar and byan).

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Is fearr Gaeilg na Gaeltaċta ná Gaeilg ar biṫ eile
Agus is í Gaeilg Ġaoṫ Doḃair is binne

I suppose that's true if for you /k'/ is a palatalised velar rather than a true palatal, as it is for many speakers.