Tis what happens when you're trying to kiss butt.
The car manufactures want it to sell small capacity turbo and hybrid cars. Technology loving types love it because it's very "now", so, well, it must be better.
And at the end of the day, stuff the "real" motorsport fans who actually love motorsport in all it's oh so old school rawness...
The fuel flow limit isn't about saving fuel though. It's to cap ultimate engine performance in this turbo era. The energy recovery side of the new cars looks after the performance boost, and it's capacity is capped.