Sentence:  The impiety of the Ciceronian attitude was probably his major objection to the sect, yet the dialogue is mainly concerned with the more <WSD>anachronistic</WSD> and illogical aspects of attempting to write only as Cicero did. 
Meaning of the word marked with <WSD> tags:  Erroneous in date; containing an anachronism; in a wrong time; not applicable to or not appropriate for the time.