Ok, I’ll dive in. First the concern of going from reverse thrust to anything above idle is non existent with little experience because you’d have to deliberately move the thrust levers forward. Reverse is a pull, and stowing is a downward motion, not forward motion and the interlocks prevent forward motion for a second or more.
Second, I know the reverse side force component is what can take the aircraft off but I’ve found that in the CFM engines (vs JT-8) the component is just not that strong.