Given how ubiquitous LE is, I think people will switch browsers first. non-chrome browsers based on chrome are plenty as well, they can choose to trust LE despite Chrome's choices. Plus, they had a good reason with Symantec, a good reason to distrust them that is. This is just them flexing, there is no real reason to distrust LE, non-web-pki does not reduce security.
GP gave a very good reason that non-web-PKI reduces security, you just refused to accept it. Anybody who has read any CA forum threads over the past two years is familiar with how big of a policy hole mixed-use-certificates are when dealing with revocation timelines and misissuance.