The people who cheered about the firing of 80% of the Twitter staff largely believed (rightly or wrongly) that they were being adversely affected by them. While Google may be seen with more wariness in tech circles, I don't think the average person believes that Google is actively harming them (again, rightly or wrongly).

These aren't the same types of events. In Twitter's case, it was a one-off act, caused by one-off circumstances. With Google, it'd be more of a precursor to a new trend that might soon take root and impact me or those I care about.

I think twitter is an outlier because people hated the employees already for various reasons.

For example they thought that twitter had a bloated workforce because of videos like this (https://www.youtube.com/watch?v=buF4hB5_rFs).

And a lot of people heavily disagreed with how they handled moderation. You can take things like the hunter Biden laptop suppression or in the funny category you had the getting banned for saying learn to code (https://reason.com/2019/03/11/learn-to-code-twitter-harassme...).

Take random company without controversies and you will find less vitriol about them getting fired.