It doesn't need to be, I just won't go near it if they communicate like this and do stuff like change their users' system settings without prompting. You can do a search for rustdesk controversy and have a look yourself. Just looking at how they hide the company's chinese origins and their communication style when they are asked for clarification... That's enough for me. Everyone should be paranoid when installing apps, and this is for remote control, no less.

Edit 2: see also their claims of open source while people could not compile a working version without a pre compiled binary blob. Maybe they fixed that? Or not?

Edit: I want to add, I want an open source software like that, I hope they would turn up good. Just going to watch from over here.