Maybe so, but traditional left-wing thinking would put Silicon Valley engineers firmly in the bourgeoisie—a group that pretends to have interests in common with the proletariat, but doesn't really. If it is class war, you guys really aren't on the same side as your nannies, cleaners, gardeners, and the people who serve you food in your free cafeterias. Their interests are very different, even if it pleases you to think that defending your elite benefits somehow helps them too.

(If you take the class-war rhetoric seriously, that is. Which I know most of you don't. Not really.)

They might have a lot more in common with the gardeners and carpenters if these hedge funds have their way. Capital is much better at capturing wealth than laborers and that's the core structural issue.

Do we know that the people laid off by Google, or advocated for layoffs by this billionaire, don't include the cleaners, gardeners and people serving food in the free canteen?

I think painting this as a "capitalists vs the left" thing is reductive and unhelpful. Personally, speaking as someone who Americans would probably consider extreme-left, I very much agree with your second paragraph, but I don't see this as "capitalism vs the left", I see it as the elite rich abusing their position to the detriment of everyone else. A story as old as time.