I think the only takeaway is why couldn't Disney do with droids what Universal did with dragons? The droids even have advantages: Much easier to build and maintain with incredibly basic articulation and internal access points for maintenance that don't even need to be hidden, easier to use weatherproof and weather resistant materials on and the ability to use blinking lights as a cheap way to make them look real. A
$10 off-the-shelf sensor could have been used to make a few of them stare guests down without having to expect much more out of them since they're only intended to be robots to begin with. Best of all, when they break and only partially function, they still look and act like real droids so it's not immersion breaking the way a dragon with a weird lazy eye or a mouth that doesn't open would be.
Instead, they've opted for a small number of cute little expensive and over-engineered wonders that have to be puppeteered, run on batteries and will have limited interaction time with guests. Like Muppet Mobile Lab -
really cool but something many park guests will never end up experiencing outside of youtube.