Crusaders "don't" measure up MWV. Since "Crusaders", the subject of your sentence is expressed as plural (more than one), the conjunctive verb (doesn't... for does not) you used as a second reference to them should also be in plural, as in don't measure up. "Crusaders don't (do not) measure up"
The present perfect tense of "doesn't" is improper use of that verbal phrase since it denotes a singular noun or subject. "
@MountaineerWV doesn't understand how to use proper colloquial English or do research". (Singular subject, singular verb tense) He
"don't" measure up! (active tense)
4th grade basic sentence structure and grammar in a private school Dude. You were robbed by trained Government indoctrinators. No wonder you're so dense?