All those "fiddly" bits(yes, many are not needed and are better molded) came about with companies getter newer tech and cries for better details where no pesky masking, etc was needed.
Same for PE, higher parts-count, etc.
Trend is reversing itself again with Dragon, Eduard, etc offering more basic simplified kits again.
Kotobukiya did the same with their Armored Core kits, tons of parts that need to be layered to build up surface detail that could be molded.
Bandai is really pushing the limits of slide-molds, micro-injection, etc too. just have a look at the new 1/144 RX78-2 kit with internal frame, transformable core-fighter, etc.
Personally agree we can do without a lot of those recent changes like PE grills, etc. Don't get me wrong some kits do NEED them like the Fujimi Gallardo, etc.
Really depends if the fiddly bits will make the model look better/accurate or just disappear.
HTH.