The percentage is low, but it's still overall a lot of people. This upcoming console generation with XSX and PS5 is a little different than last gen since these new consoles have way better specs out of the gate vs the average PC gamer specs today, compared to the launch PS4 and X1 specs vs the average PC gamer specs in 2013.
ppl don't make it seem like everyone has titans. The areas on the internet where people actually give a shit about this kind of stuff will naturally have more enthusiasts who naturally will probably have better gear than the average joe. They're also doing a lot of theorycrafting. The nature of the discussion as well as who is partaking in that discussion drastically shapes the perception of that discussion.
Anyway.
Some numbers for thought. According to that Reddit post about the DF video:
3% of Steam users have a GPU that is better than next gen. I dunno what the current total number of overall users are, but last year,
there were 1 billion.
3% of 1 billion is 3 million current Steam users who currently have better than next gen hardware. Keep in mind that this number is also not representative of the entire PC userbase, but we only have so much to work with.
7% have an 8 core CPU, which is 7 million users.
So,
Steam users with better GPU than next gen: 3 million
Steam users with 8-core CPU: 7 million
First year-ish sales of PS4:
18.5 million
First year-ish sales of X1:
10 million
Total sales of PS4:
108.9 million
Total sales of X1:
46.9 million (estimated)
It'll be interesting to see how the numbers play out this fall and over the next year. There are some factors that are still the same as they were in 2013, but some are different. Personally I like how consoles this upcoming gen are pushing the envelope way more than in 2013.