Current, unaffected employee here. Throwaway for obvious reasons.

A big chunk of the layoff is the new lab that we built in Phoenix. That only made economic sense in the scenario where we were selling far more kits than we succeeded in selling.

The rest of the layoffs have a similar root cause: a massive overestimate of how much we were going to sell.

I'd blame the shortfall on some combination of growing privacy concerns from customers, failure to understand the demand elasticity as we cut back on discounts, maybe some slowing of consumer discretionary spending, and maybe saturating the market.