Hilariously naive comment - "if you have money you should spend it on salaries". This is not a charity, it's a transaction, the salary is paid in exchange for revenue generating activities or supporting activities in a viable business. If the business is only doing 2.7mill in ARR, then it's entirely valid for the whole lot to get laid off.
It’s not about being a charity, the entire point of startups is to trade capital for time to market. If the CEO doesn’t know what to do with 130 people they don’t know what to do with 70.
What are you talking about? How does it follow that "if they don't know what to do with 130, they also don't know what to do with 70"? This is literally capital allocation, the decision was that the people laid off couldn't be deployed effectively within this particular org. But maybe they would be effective elsewhere. Don't take this stuff personally, else the working world will always be difficult.