That wasn't a copyright strike more than it was a Community Guidelines violation. When my channels were still up, I got a strike here and there for community guidelines...and it was always about "spam". Always had them overturned and restored. Some a------ must have flagged his videos so he would be terminated.
Likewise, the AVTB account where I am reposting many of my videos got a copyright strike last week from another YouTuber for a video of commercials from a block of 1986 cartoons. His reason? "You stole my video." The YouTuber was not verified, and he too was posting blocks of Saturday morning cartoons, but he was posting the whole cartoons w/ commercials. Keep in mind, '80s nostalgia-type guy, not a voice actor, not a producer, never worked for DIC. My commercials were from the same program, but different station...and he carefully edited out any local breaks on his videos. We have emailed him to try and get this retracted, but he refuses to answer us.