Yes I guess that's true depending how you look at it. Unfortunately countries that produce coal or oil tend to be heavy handed in the use of dirty electricity and that brings the world average down.
Also it depends on the definition of renewables, some consider nuclear as part of the mix.
Letś keep in mind that just one country, China, is still a big producer of coal and this distort the average being also the highest consumer of energy worldwide.
My point is there are countries like Norway with 98% green energy and some regions like Latin America with 60% clean energy mix and this trend is only growing.
Have a look at this: