What's Up with the New Details in Steam Reviews?

So I was just checking out the new Steam Mobile App, which my phone eventually just went ahead and updated to behind my back, and either there or on all links to a person's review for a game it is now saying whether each person bought the game "direct from Steam" or used a "Steam Key" to get their copy of the game.

When did this start and what's the point of it, at least officially? I figure it's so people know if someone got their copy of a game by paying, at minimum, the lowest Steam Price if direct or if they might have gotten it from a bundle or from a gray market site and probably paid a great deal less. To me that would make a lot of sense. I know I'm much more likely to give a game a thumbs up if I only semi enjoyed it but also paid less than a dollar than I would be if I found it mediocre and paid full price or at best, the lowest possible Steam price. I've seen games listed on Kinguin and G2A for next to nothing. For awhile, Star Wars Squadrons (recently a free Epic Store game) was 25 cents or less on the gray market sites. Other games might have had their best prices at half of the best Steam price ever or less; the Evil Within games and Walking Dead games come to mind, of which i only own the first 2 TWD seasons. I also bought and refunded or bought and returned Evil Within (the first one) so obviously it just wasn't for me, the instant extreme gore in the game without warning up to the gore was kind of a turn off for me, can't remember if there was a chainsaw right off the bat or not but it felt like it would if Resident Evil 4 put you up against the chainsaw guy as soon as it started. I need a warm up is all... Anyhow, I obviously didn't like it but if I got it for 2 bucks I might end up giving a thumbs up to a game I didn't initially like enough to keep and so my thumbs up really SHOULD be taken with a grain of salt.
So is that the reason for this new detail? To give more of a frame of reference for a person's score, a lot like if they got the game for free?