whathifi - viinyl revenue overtakes cds for the first time since 1986

I'm wondering whether these "CD stats" include online purchases that are downloaded to a computer

If I understand you correctly, music downloaded to a computer is considered a download.  Here is what the report says about them:
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Digital Downloads Revenues from digitally downloaded music were down 18% to $674 million in 2020. Permanent downloads of albums fell 13% by value to $320 million, and individual track sales were down 23% to $313 million in 2020. Downloads accounted for only 6% of total recorded music revenues in 2020.
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While download revenues are falling, they still managed to beat vinyl again this year.

That article is misleading. Vinyl sales surpassed that of CDs but when looking at units sold, vinyl sales were only 2/3 of CDs sales (22.9m to 31.6m). https://darko.audio/2021/03/us-music-fans-bought-more-cds-downloads-than-vinyl-in-2020/

All the best,
Nonoise