This question was based on some incorrect assumptions, but is still useful.

There are a number of methods to extract the lipids.

Incorrect assumption:

1. pyrolysis would create a crude that would be comparable to other processes.
   1. Correction: Heat accompanies disorder and damage. Pyrolysis would produce a biocrude, but is essentially an unnecessary step as many of these organisms already have a favorable profile
2. Pyrolysis is much simpler than other processes
   1. Somewhat true, but still requires inert atmosphere.

Key source:

Jae-Yon Lee, Chan Yoo, So-Young Jun, Chi-Yong Ahn, Hee-Mock Oh, Comparison of several methods for effective lipid extraction from microalgae, Bioresource Technology, Volume 101, Issue 1, Supplement, 2010, Pages S75-S77, ISSN 0960-8524, https://doi.org/10.1016/j.biortech.2009.03.058.