Not if you go to a decent kebab house that do the meat "in house". In flames you used to see them making it in the back, it was meat colour, made by hand byt doing little flatsish rolls and sticking it over the spindle, quite a few of them to make it tall - it looked like meat. Never asked what meat it was like, but I was satisfied it was meat.
As for the frozen stuff chippys use, I've never seen white meat.
Also flames would go through about one a day so it wasn't contiunally "cooked" and lashed in a freezer over a period of days.
How people eat kebabs from chippies and most kebabs, I don't know, I certainly wouldn't. I only eat them from certain places which rules out a pissed kebab unless I get a taxi to a decent kebab place.