I would be wary of new teammates whose motto is "think different" when it comes to operating services at $B scale, because if they break something, someone else

I would be wary of new teammates whose motto is "think different" when it comes to operating services at $B scale, because if they break something, someone else on the team will have to work all day and night to get things fixed and it won't be them. That does probably depend on whether you're doing greenfield work or not, but even then these costs are there but just not immediately visible.