Does seem biased to not mention the prior US testing, which destroyed satellite Solwind P78-1 in 1985, leaving debris in orbit for 2 decades. (also suggestive of secret testing which may have left more)

There's also an earlier Soviet program described in the article, with many space impacts, tho debris extent isn't noted.

https://en.wikipedia.org/wiki/Anti-satellite_weapon#United_S...