mine are the same, it's a safety issue so that you don't drive away while the slide are deployed, simple. we might not 'like' it, but there are ways around it, as I've driven with my slides deployed myself, and if careful, it's not really an issue - such as when I've already deployed them but find that I really need to move several feet, or even somewhere else in the 'parking lot' where we are for the night.
agreed, though, as I sometimes forget and crank the engine before retracting the slide... oh well!
It sounds like you don't like to depend on the batteries alone to extract your slides, but they are well designed for that, no worries.
some coaches are right the opposite, go figure.
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
100,000+mi since '14 - US, Alaska, Canada.... formerly Georgia, then NorthCarolina, now Alabama : )