For someone who is a dedicated Opera follower you surely are not aware of Operas development.

I may be aware of it more than you think.

A while back Opera has introduced a "feature" on mobile which displayed discover content on the speed dial of the cell phone

I know that and this is exactly what i've said is completly different of what your screenshot shows. At least on my version of Opera for Android.

It looked exactly the same as it looks on the screenshot I took from my desktop installation.

As said, they may be doing A/B tests and it may explains why some people are not seeing the same as you.

Shortly after it was added, they removed it, due to the negative feedback.

Opera Mini seems to still have it.