No, it’s a ridiculous flaw of physics. Keeping things in memory means that memory must be refreshed, because the memory is dynamic RAM. Refreshing memory requires power, and only horribly inefficient designs, like what Samsung does, would include more memory than is necessary. Thankfully, unlike the terrible engineers at Samsung, Apple’s engineers chose to make a much smarter design decision.
You say you are an designer of some sorts and you write stuff like this. Funny.
RAM uses power no matter what.
Saying Samsung's design is horribly inefficient because they put 16GB in their phone is objectively a huge exaggeration.
Especially when they made this jump with LPDDR5 RAM, so they used faster and more efficient RAM and also moved to 5G(which allegedly uses more RAM), they didn't just desperately threw a bunch or extra RAM in their phones like some users here would like to suggest.
The most important thing is what users gain from this much RAM and what they sacrifice.
On the sacrifice part they mostly loose a couple of minutes of battery per single charge. It's hard to quantify how much because I was never able to notice an obvious difference in battery life between the same 2 Android phones(exactly the same model) with different RAM configurations. Apps that remain in RAM don't necessarily use a lot of battery, it all depends on how the OS manages these situations and Android has gotten a lot better here in recent years.
Now on the gaining part, users gain flexibility in phone usage(they will basically very rarely see an app refreshes, it doesn't matter how resource intensive apps that are being used are), they gain better consistency and performance in general usage, the ability to have more active services without hurting phone's overall consistency, they gain advanced features like Dex mode, more multitasking options and last, just in general more future proofing.
In the long run having more RAM than necessary is better then just having exactly the necessary amount of RAM because what's enough now a lot of times is not enough tomorrow.
Also there is a precedent with poor RAM management on iOS 11 and iOS 13. With iOS 13 they managed to mainly fix it but with iOS 11 they needed a big OS overhaul to fix the RAM management. These situations make obvious the weakness of having just the enough amount of RAM.