Nothing in your list precludes the phenomenom. 1) defines it away.
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What are Main Sequence Stars? - Universe, Guide
https://www.universeguide.com › fact › mainsequencestars
A star will spend 90% of its life in the main sequence. When a star leaves the main sequence stage, it will can go supernova and become a black hole or a neutron star. At this stage, existence will not be over just yet as it will continue to glow/exist for a lot longer than it was in the main sequence.
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The classic scenario of feeding off a binary star companion is being extended to dust swept up from the interstellar medium.