Not at all - see senior dev engineer salaries at Google [1]. High 2xx seems reasonable. I may have missed GP's comment about being in finance, otherwise I don't see the relation to finance salaries.
On Blind (yet another anonymous app for employees at BigCos) there have been dozens of people reporting 300k+ salaries at Google/Facebook/etc. Most recently was a Senior Software Engineer at Netflix with a $420k base (Netflix doesn't really do stock as a significant part of comp).
I find that memo very odd. It's been my experience people involved in a 21 member "sewing circle" aren't there by choice - they've been directed to attend the meeting by their boss. Where I work sometimes people go to these kinds of BS meetings and then stay late to do their actual work.
1. https://www.glassdoor.com/Salary/Google-Senior-Software-Engi...