Christopher Frost has published his utube review of the above lens and it's a very mixed bag ....
Basically the lens is "quite" sharp wide open in the centre (with some purple fringing) but there's two caveats ..... firstly focus shift is very strong requiring a post 2021 Canon body that is able to focus at the taking aperture, images with earlier Canon bodies show the lens's focus shift is so strong even stopped down to F2 you have missed focus images and need to manually focus, so AF is really a no no on those earlier models ...
Secondly, it has strong field curvature, good sharpness across the frame into the corners requires closing to F8.
Bokeh is also not a strength of the lens as is a slowish AF ...
I see your reasons to comment unfavourably about the lens's short comings Klaus
Looking forward to the OL review .....