I think you can switch accounts without removing them from the device. However, recently I logged out from all entertainment websites but was unable to prevent myself from watching YT. It can't be uninstalled without a root and now you can't even log out. Android phones are becoming more and more like a Google service, not a device you actually own.
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This is hugely inconvenient given i deliberately partitioned my music holdings into a distinct account.
I think you can switch accounts without removing them from the device. However, recently I logged out from all entertainment websites but was unable to prevent myself from watching YT. It can't be uninstalled without a root and now you can't even log out. Android phones are becoming more and more like a Google service, not a device you actually own.