Does this settle the Reimu+Marisa vs. Alice+Marisa wars? At least it could bring about a temporary truce. It would be in-character for Marisa as we know her to go, wait, you want me to pick between two cute girls who want to devote themselves to me? Rewind!
Most MariAli shippers push Reimu off onto Yukari, right? So it's more like, poor Patchy, what does she do without Alice? I think Marisa would say it's okay to share.
As far as I can remember, this is literally the one instance of this triangle where Alice actually beats Reimu. And Reimu's not even that broken up about it.
Meanwhile every other ReiMari artist's like "lmao alice on suicide watch in the background".