Bob:
Electronics were basically a '90s thing. There were some electronic controls earlier, but that's when the switch really got underway. It started out as a high-end technology, but the cheapness of electronics and the dawn of overseas manufacture at bargain labor rates sent it mainstream.
The current fashion for concealed bake elements is nothing new; they've been around for over 50 years. Sadly, today's young whippersnapper designers didn't go back and look at any of the previous iterations before trying to foist this bit o'bushwah off on the public again. If they had, they'd have learned that the design makes temperature control more problematic, and promotes rust-out of the oven floor due to condensation.
It's just like "bagless" vacuums, which are so heavily promoted nowadays. Anyone who grew up with a dirt bag to empty (like I did) welcomed the advent of disposable paper bags with the keenest of enthusiasm. Now, Corporate America is offering you the chance to pay a lot of money to go back to the Stone Age of vacuuming.
I am happy to let Dyson owners get dirt blown back into their faces on breezy days when they empty the "dirt cups" of their overpriced toys. I will continue to pull a sealed disposable bag out of my vintage Electroluxes and throw it away without a single speck getting on me.