CAVIL

to find fault without good reason.

/an evasion of the point of an argument by raising irrelevant distinctions or objections

raise trivial objections

SYN - quibble, carp, chicane

"He finds something to cavil at in everything I say."

"Correcting every simple typo on the message board was the sort of caviling that made it so frustrating to try to make and defend a point."

"He knew he had no ground to stand on, but still he went about the meeting with the plan to cavil each part of the plan."

"He wasn't invited to the discussion becuase he is a caviler, and the topics are meaty and confusing enough that they did not want the distraction of someone raising such trivial objections."