and does this mean that there are two ars? one in dead dirks glasses and one in dream dirks glasses?
There is no way there could be one in Dream Dirk's glasses. It's not like they're wearing the same pair of glasses through time shenanigans. They were two different beings with no physical contact between each other, and no way to meet each other in the same timeline even via the portals.
And I don't think Dream Dirk would have had access to the materials to make a completely different AR on Derse.
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"One toot on this whistle will take you to a far away land."
-Toad, SMB3