Should LoAF emit when there is a long blocking task but no "paint"?

Often these result in a high INP but no LoAF giving details as to why. Of course best practice would be to have a paint of some sort acknowledging the interaction but there's plenty of examples were that's not the case (including a "no-op" click while the main thread is busy whether this is nothing to update).

Demo illustrating this: https://loaf-tester.glitch.me/