The Gers went down 2-1 as they were beaten at Ibrox for the first time this season.
"It's very easy to have an opinion without full knowledge of what's going on and that's the beauty of football," McCoist told reporters.
"There have been comments from one or two ex-Rangers players who indeed have coached and managed at a level, which are pretty ignorant because they don't know the full story and they are a little bit misguided.
"They are entitled to their opinion, of course they are, everyone is entitled to their opinion but we in here certainly don't take them too seriously."
Rangers, who have a 17-point lead at the top of the table, return to league action on Saturday when they make the trip to Elgin City.