No. I’ve known about timing attacks for as long as I can remember. In any case, any specific individual’s familiarity with timing attacks doesn’t change the fact that using the term “constant time” to refer to time complexity is far more common than using the term to refer to timing attacks susceptibility. Not to mention formal algorithm analysis predates the formal description of timing attacks by many years. https://en.wikipedia.org/wiki/Time_complexity#Constant_time