Why are there so many ads on YouTube lately?

Have you noticed the massive increase in advertising on YouTube videos lately? Have you wondered why? Here's my theory and here is why I believe it is a threat to all monetized creators.
Channel support links:
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My generic Banggood link. Click on this before buying stuff from them (within 15 days) and I get the small but helpful commission:
https://www.banggood.com/custlink/KmvvRTz2kN

My patreon page:
https://www.patreon.com/rcmodelreviews

Видео Why are there so many ads on YouTube lately? канала xjet