All it takes is 2 ip:s and two downloads of their installer and compare checksums.
https://download.teamviewer.com/download/TeamViewer_Setup.ex...
4440facac7b7bf11478a0368ce448adc732d97ae TeamViewer_Setup.exe
I don't have Windows near me to rub tests myself.
Makes them more decent than the others, in my book.
Sure, the installer ships a font file, and sure, the most obvious answer is that it's just installed as is.
But my app also ships a bunch of templates, and it doesn't mean users will always see the same thing when they're loaded. The font binary could have some magic number that's replaced with a fingerprint ID.
Most likely it isn't, but the work to verify would actually involve installing TV in two different machines, and comparing the installed files.
If you think they're going through the hassle to ship a font file but sleight-of-hand install a different font, then why do you think they wouldn't also go through the hassle of further hide what they're doing? For instance, replace a preexisting font you wouldn't think to look at?
If you think it's honest-to-god malware, then provide evidence that it's malware. Installing a font does not make software malware. Checking for the presence of an installed font is not malware.