They've clearly explained here. I'm not sure how many people would keep asking the same question without even doing a simple web search.

https://grapheneos.org/faq#future-devices

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tcfhgj 4 days ago | parent | next [-]

not sure if it is an explanation or a justification

	▲	raziel2p 4 days ago \| parent [-]
		what's the difference?

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megaloblasto 4 days ago | parent | prev [-]

Someone clearly replied with the same link. I'm not sure how many people would keep replying the same thing without even doing a simple thread search.

	▲	garciansmith 4 days ago \| parent [-]
		They posted within a minute of each other, so likely did not see the the response and were typing theirs as the other got posted.