I can't speak to the battery life, however, since it is dismal on my Dev Kit ;-)
Day-to-day, it's all fine, but I may be returning to x64 next time around. I'm not sure that I'm receiving an offsetting benefit for these downsides. Battery life isn't something that matters for me.
Linux is different. Decades of being tied to x86 made the OS way more coupled with the processor family than one might think.
Decades of bugfixes, optimizations and workarounds were made assuming a standard BIOS and ACPI standards.
Specially on the desktop side.
That, and the fact that SoC vendors are decades behind on driver quality. They remind me of the NDiswrapper era.
Also, a personal theory I have is that have unfair expectations with ARM Linux. Back then, when x86 Linux had similar compatibility problems, there was nothing to be compared with, so people just accepted that Linux was going to be a pain and that was it.
Now the bar is higher. People expect Linux to work the way it does in x86, in 2025.
And manpower in FOSS is always limited.
This doesn't pass the smell test when Linux powers so many smart or integrated devices and IoT on architectures like ARM, MIPS, Xtensa, and has done so for decades.
I didn't even count Android here which is Linux kernel as first class citizen on billions of mostly ARM-based phones.