It has obvious pros, but since you asked about the cons —- anonymity brings the worst out of people; TC chasing leads to a reductionist view of people’s values and skills.
For example unlike HN you don’t often do technical discussions on blind, by design. So it is a “meta”-level strategy discussion of the job, then it skews politics, gossips, stock price etc..
This is compounded by it being social media, where negativity can be amplified 5-10x.
Mainly because it brings out the worst in people. It’s easy to read Blind too much and take on a very cynical, money-driven view of everything in your life, which of course a Blind addict would justify as clear-eyed and pragmatic.
I hate teamblind because it makes me feel really negative about our industry.
I actually really like tech - the problems we get to work on, the ever-changing technological landscape, the smart and passionate people, etc, etc. But teamblind is just filled with cynical, wealth-obsessed and mean careerists. It's like the opposite of HN in many ways.
And if you ever wondered where the phrase "TC or GTFO" originated... it's from teamblind.
If you've ever browsed teamblind.com (which I strongly recommend against as I hate that site), you'll see what the people who work at Meta are like.