Rather than the newroom article, take a look at 25% Tier... the pop-up on:
http://www.ukstatus.co.uk/information.aspx
(Sorry it's a java link - so, it's hard to link directly to...)
It clearly says:
Members of bmi diamond club and Miles & More currently receive a 25% tier bonus on all Star Alliance flights as part of their standard programme benefits and will continue to earn their tier bonus according to the applicable programme rules.
And also:
Tier bonus may not count towards status (may vary by each airline’s frequent flyer programme).
My interpretation is that these bonuses do not count towards status, they are simply awarded on the basis of status.