Health care is complicated but everything except the tax issue is a quibble or a red herring.
A weird thing to quibble about, considering he is a moon landing denier.
There are several other things in the Wiki vs. doctors article to quibble about, which the authors generously note.
1610s, "a pun, a play on words," probably a diminutive of obsolete quib "evasion of point at issue," based on an overuse of Latin quibus? in legal jargon, which supposedly gave it the association with trivial argument. Meaning "equivocation, evasion of the point" is attested from 1660s.
"equivocate, evade the point, turn from the point in question or the plain truth," 1650s, from quibble (n.). Earlier "to pun" (1620s). Related: Quibbled; quibbling.