I think that the JESUS ONLY folks hostile to the Trinity--as so many groups have--broke off out of political, psychological dynamics and blamed it on theology.
Thankfully, as horrible as the heresy is, it's not, evidently, the uppermost priority from God's perspective. Not sure why. Seems pretty crucial to me. But He seems quite given to using folks on both sides of the issue.
Who am I to quibble with Him and His ways whether I understand them or not; whether they follow my script, or not.