Remember last year when Kaspersky accused[1] Microsoft of anti-trust for disabling their antivirus? And Microsoft admitted it was done in the name of compatibility.[2] Something about that seemed fishy to me because none of the other AV venders were complaining. Was Microsoft told to intentionally sabotage Kaspersky?
That sounds like a legit software incompatibility to me.
Kaspersky was probably using some private API they shouldn't have been using, and when Microsoft changed the API or changed the way it worked, they had to disable Kaspersky or computers would no longer boot up.
When companies do that, they nearly always reach out to the affected vendors with advance warning so the vendor can do a rushed fix, but repeat offenders, or issues detected very late in the game before release can end up with no notice.
Kaspersky is just easy target and apparently three-letter-agencies have means to steer the media to pursue this direction.