I have read the feed you are referring to, and I understand it. But that doesn't answer my first two questions. Thank you.
Can I use an Adobe Stock image as part of my company logo or brand?
No. You need to have complete ownership of the image you use for your company logo, since logos are intended to be registered and protected to prevent other companies or organizations from using the same image. Because Adobe Stock only grants a right to use images and does not transfer the ownership, these images cannot be used in or as a logo.
Reference: Common Questions, Adobe Stock
Yes, I understand that. But that doesn't answer this question:
And why can I search Stock and find vector illustrations that have been used in logos designed by logo-design websites? If I compare the logo witih the Stock images, many are very similar or the same. Changes include different colors, partial usage, mirror image or rotated vectors, almost identical lettering.
I am also curious about this... Kind of seems like they have dropped the ball on this one...
And why can I search Stock and find vector illustrations that have been used in logos designed by logo-design websites?
What you can do and what you are allowed to do are two different pairs of a shoe... If the local grocery in Taiwan and the local grocery in Germany and the local grocery in the USA use the same logo, nobody will ever know about it. But when one of those decides to go global, it smells trouble.