About what is being talked about in Quora. Even if your security software suggests the site itself is safe, you should always exercise caution when downloading from unofficial sources. If they come bundled in with nonsense that you didn't ask for and try to tempt you into installing other things unrelated to the app you're wanting, don't, those will likely come with malware, in fact any such apps that come with those things should never be installed under any circumstances. This is a clear attempt to get you to install something you shouldn't, and if you click yes to installing bundled software on obviously tampered files, they can then reasonably pass the blame onto you.
And of course the sensible thing to do is never to download from sources you don't trust,
certainly never click on just any random link someone posts to you on social media,
unless you see that the URL leads to an official or secure site of some sort.
That said, I've downloaded apps from Softonic before, Picasa, because Google no longer provides it, I never had issues with it so far,
but I ran a scan first, and the exe didn't give prompts to install unrelated software and according to a scan, it reads the file as okay.
Doesn't mean that it is though, it just means the anti-malware program didn't find any malicious code embedded in it.