I've been working on Key Values (https://www.keyvalues.io) for many months now trying to do just this: surface details about actual team members, day-to-day processes, and a team's engineering culture. At least this way, we as engineers can be more informed when deciding where to apply, where we'll devote hours/energy interviewing. Of course engineers might be skeptical or have questions, but at least we have something to respond to.
Ultimately, neither job-seekers nor employers want to waste time and energy interviewing people they aren't culturally aligned w/. Maybe the lesson here is that engineers should seek out the teams that care about what they care about, whether it's mentorship, high quality code, or work/life balance. I know it's controversial (especially here in HN), but is salary really more important than doing work that is exciting/challenging/energizing/stimulating or feeling valued/appreciated/respected/passionate?