Stallman paranoid, and maybe a nut, honestly.
The cloud is actually a lot safer and has much greater usefulness, if you have a networking platform to unify all your scattered IT.
If you keep your email on a server in a data center, or license software from Microsoft, for example, that's hosted on a server in one of their data centers, it's far more secure than if it's on the computer in your house or business.
Data center buildings are fire proof, earthquake proof, video and human security, built above flood plains, temperature controlled, and superior hacker protections than you'd ever have at home, and in most cases, at work. There's no issue.
They also have fail over protection, and everything is backed up as often as you want, even continuously.
This is a much cheaper way for companies to grow their IT assets and a much better way to control their monthly expenses.
A real, vs. imaginary problem with cloud computing, is that small and mid-size companies typically don't know that they need a unifying platform so that they can unify all their IT assets in one place on their desktop, let people collaborate and easily network with each other/share documents, and integrate cloud assets with their locally hosted IT assets.
External IT is one cloud hosting provider which does this. There are others.
The first version of their cloud hosting platform, OS33, originally launched about seven years ago. It's a proven, stable platform which makes managing permissions, adding or deleting users, etc...much easier than Stillman's expensive, inefficient, and old-school way of doing things. Thousands of people use OS33 every day, and have for years.
Tens of thousand of people are using the cloud properly, with one of these platform, rather than just having a bunch of SaaS type apps in the cloud, and getting much greater IT utility and IT access than leaving everything on your desk computer.
For the last six months I've worked in the cloud, using the OS33 platform. Glitch-free so far, and hugely convenient when I travel.