Here's a framing of the problem.
There's software called PuTTY, and non-technical or less technical people, or even technical people who are running on autopilot, might reasonably expect that it's hosted on putty.org.
They just need to be more careful.
Here's an analogy.
Even capable programmers keep screwing up when using C and end up with memory leaks and security vulnerabilities. But that's no reason to stop using it ... people should just be more careful.
No analogy is perfect, every example has problems and loopholes, but this seems a reasonable one. Just as people should use programming languages that make it harder to make mistakes, so companies should not behave in deceptive manners, and when they do, they should be called out on it.