One thing this chart doesnt take into account, psnow has 400 ps4 titles, but also another 400 ps2 and ps3 games - 800 in total. gamepass has around 400 total.
if you take just the ps4 games into account the numbers change significantly, with both of them having the same overall number of available games.
I think warring over this kind of stuff is stupid, that's why i'm pointing out that the chart is meaningless. statistics is all about picking your data to support the argument and it's so easy to make a slight tweak to that which completely changes the results. you could compare only the top 100 scorers to find out the highest average, or certain parts of certain generations, or discount historical titles and only compare new ones etc etc.
basically when the argument flares up, don't contribute to it, who cares.