I don't think these examples are sufficient evidence that electrum is using Async on the back end.
One is a bug specific to Android. The other had a very small LN channel so it's not surprising that it got forced closed.
OT
npub1sm…pxn8w
2023-12-20 03:32:32 UTC
in reply to nevent1q…cm98
Author Public Key
npub1smreuk4gcs0k3jdz8zzckzxy6c7pkr8x6nafd5e2jr0jt0vrkpeqvpxn8wPublished at
2023-12-20 03:32:32 UTCEvent JSON
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