It was just force of habit this was the resurgence in the early 90s this is probably 91/92 they consciously made it a point at this time to correct themselves and call themselves Bboys. The interviews are out there with wiggles Kenny legs fable etc. According to legs the term breakdance was a media term I think the British media or there manager at the time (early 80s) said it .
Gymnastics, Jazz, tap dance, kung-fu, swing, african tribe dances, housing, funk, soul, locking, tumbling, acrobatics and many more styles of dancing and movement evolved into what is now known as breaking/bboying.
The reason why he said breakdancing is because if you said breaking people wouldn’t understand. It’s like if I started speaking a different language to you