It can go into a death spiral. If confidence in Tether wanes, AND Tether is holding underperforming "cash equivalents", Tether can go to zero overnight.

Tether has never been audited. The market is about to audit them. Watch the tether market cap...

What does this say about the valuation of Reddit?

Two words: 1. Cha 2. Ching!

“If RSUs are off the table, then you can try asking the company to pay the [early] exercise price for you as a signing bonus.”

This is excellent advice, especially given the risk you described in (2).

Can you elaborate?