AOSP doesn't have that much bloat, it's far lighter then your typical linux distro, It's vendors that bloat it up, Custom roms are extremely light, This is BlissOS running on 2Gb of ram https://files.catbox.moe/4n17z3.mp4.
It's far more responsive then many linux distros would be since android and it's applications are optimized around low ram and low system resource in general