Can this affect the price of bitcoin or is this another anti-mining statement?
It is definitely anti-bitcoin, but I think that all bitcoiners got used to that by now. And no, I don't expect it to affect bitcoin price much in the long term.
If it's only 10% as stated then VERY short term it might matter, but in the long run probably not.
Keep in mind that in that article they count all crypto mining and not just bitcoin so the actual percentage of bitcoin mining is even lower, meaning it would be even less of an impact.