That's reasonable in some ways — it just doesn't seem like a wise choice to leave the battery plugged in / staying nearly fully charged the whole time.
By the same token, it's not uncommon to find MacBook users leaving their Macs always plugged in to have the batteries swollen. Part of the reason for some people is to minimise the charge cycle for a higher resell value, but in fact they do so at the expense of the battery health (the chemicals have to move from time to time), or even fire safety:
source:
https://forums.macrumors.com/threads/is-this-a-swollen-battery.2231637/
As long as there isn't an option for the user to manually stop the built-in battery from charging / at say 50%, there's no reason for a device to be deemed as a desktop / fixed device acting as a home hub.
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As a side note, Mac users may find apps like Charge Limiter, AlDente, BatteryStatusShow useful for controlling how much the battery is charged for leaving it plugged in for a longer period of time.