That's not what Certificates are for. LetsEncrypt was recently funded heavily by Google but it's a non-profit who's goal is to create a secure Internet. You are referring to Google push for non-https related sites who index score would drop if they don't have https enabled. Any engineer in the field IT duty is to provide accurate and authentic information. For instance, if someone uses Donald Trump twitter account and tweeted "Putin is a fuckboi, USA will fuck Russia up", Twitter would be responsible for the erroneous information due to security breach on their unsecure site. Another example is, what is stopping me from sending you a false link to renew your BGOL dues for the year? How would you be able to tell if I'm legit?