I don’t know of any educated and thoughtful thoughtful Protestants who dispute Jesus was God from His conception...even though God the Son (with God the Father and God the Holy Spirit, One Being) subsisted from all eternity. In that sense, then of course Theotokos is an accurate description for Saint Mary, especially since it emphasizes the hypostatic union of two natures in one Person, Jesus.
This is not something orthodox Christians—of any stripe—dispute.
Nestorianism was...and still is, heretical.
I agree. Old heresies never die they just get better PR men.
yet you have various stripes of folks who dispute that -- as seen on this thread.