I don't get what the ask is. Steam should be even more heavy handed? They should hire people to playtest other people's games? I don't see any alternative reality where they have already taken these actions and are less hated for them.
Currently, we have floods of garbage hitting Steam, with no curation at all. Pre-Greenlight, Steam was a closed shop that was hard to get into.
What is needed is a healthy balance, that doesn't have zero chances for an indie game to be seen because it's buried under all the AAA titles, yet doesn't allow trash like Slaughtering Grounds to be sold.
The article suggests getting Valve employees to playtest any submission - however, I feel this still wouldn't work due to Valve's 2 main issues. Their flat structure, where people work on what they want - who wants to look after content curation? Secondly, they take a cut of every game sold - regardless of how awful it is. They are financially incentivised to keep subpar (or even scammy) games on the store.
I'm not going to pretend I have a solution, but I feel all the issues with the Steam store currently are issues of Valve's own making - the problem is, they don't (seem to, at the very least) care.
Are you asking, who wants to play video games for pay?
One expects that someone could be found...
Basic "does it run on X platform" is even more boring (but more automatable).
So, more "who wants to wade through potentially piles of garbage unity-based asset flips made by one guy in his garage, while potentially stumbling across a couple of commercially viable games"
They are destroying their own brand by not doing it.
Doesn't even have to be a human for some of the "does it launch on a sample of devices" tests.
You can't get your game onto XBox or PS without passing these kinds of basic checks, and this has an impact on the Valve brand. I'm just not sure Valve has someone in charge of ensuring that their brand is maintained.