This is referring to StackOverflow's Talent product, which is a software engineering focused hiring platform. Seems like they furloughed the sales and marketing team for this product, due to an expected slowdown in market-wide hiring.
This is due to how cryptocurrencies are classified by the IRS. Currently, they are classed as assets (property) as opposed to currencies, and thus any "realized gains" are taxable events. This includes the above example, where you may have technically "realized a gain" while buying a grilled cheese with Bitcoin.
I've found that Instagram use is growing amongst nearly all of my friend groups (including HN demo and non), while use of all other social apps is fading (not counting WhatsApp). For reference, mostly age 24-32 in the US and Western Europe.