“cleary first step what you should do”
i love the confidence 
Certainly – but he is right. I wrote threadsafe programs over 20 years ago, and it has not become more difficult since then. I suppose the main problem is limitations in game engines, which seem to have been hobbled by console hardware.
If you write today, you’d better be able to make use of 16 cores and 64GB RAM, because tomorrow some of your users will have that.