So if I understand what you're saying, if someone asks you "Hey, could you recommend me a general purpose Linux distribution?", you'd recommend them Ubuntu Server rather than just straight up Ubuntu?
I'd agree both could be used in a general-purpose way, but I'd definitively call one of them more general-purpose than the other.
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If they need a general purpose distro for a server, absolutely.
That would likely be a better recommendation than android.
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