Declaring they are installing malware is a pretty bold assertion. Care to back that up with something other than feelings?
https://www.gamesindustry.biz/unity-ironsource-malware-came-...
https://www.pcgamer.com/unity-is-merging-with-a-company-who-...
Not allowing developers to remove it from their games would certainly be a step too far (at this time anyway, who know what will they come up with in a couple of years).