Oh! Well?  Yes, Mr Hackett, it's pretty simple really. Like a lot of people, many members of the STCC Facebook page, have begun to realise that the message put out by them is false and based on many untruths.  As an example, the testimony offered in court to obtain the SEQR report was 'fudged' by omitting to tell Professor Donald Gray that the trees on 'wooded slopes' were actually on an Earthen Embankment Dam, subject to hydrostatic pressure.
see https://eriecanalfacts.wordpress.com/2018/04/19/testimony-in-question-vegetation-on-dams/
Dr Gray stated - I don’t know of any earth dams where woody vegetation was purposely planted or allowed to grow on a face of the dam. But the STCC, and Pittsford Town Supervisor Bill Smith, conveniently forget to tell you that.

These, plus the Rizzo reports https://eriecanalfacts.wordpress.com/2018/04/15/rizzo-report-on-state-of-dam/  and the new Earthen Embankment Integrity Program (A result of the SEQR report) and the overwhelming evidence provided by the NYPA, have now swayed people away from 'protecting trees' to protecting people.

We hear very little complaining from those folks living under the threat of flood by a breach, and it's worth mentioning that all of the leaders of the STCC live well above any potential flood zone.

As for the Town of Perinton and the NYPA, it looks like they have given up communicating with the STCC. It's now a Fait Accompli and the process forward has been made abundantly clear in the EEIP.

Anyone arguing against this is railing against public safety!