Doesn't GDPR basically count as the perfect excuse as why they would count the same user installing as multiple installs?
Something along the lines of "we can't identify the device so we have to count it as a unique install"
Something along the lines of "we can't identify the device so we have to count it as a unique install"
The post you're replying to seems to be more meaning "they shouldn't be receiving any information from (un)installers anyway".
So, them being able to count installs at all is the problem.