Often1

It is pointless to argue with front line agents about what may occur in the future. They do not interpret US law. What will occur in the future is that OP will have a new or reactivated ETC and may purchase a new ticket with that ETC. That new ticket will be governed by DOT rules as they are in effect on the date of purchase.

Should OP make that purchase, should he wish to cancel in accordance with the Rule, and should he be denied a refund having complied with the Rule, then he will have something to complain about.

In the meantime, he is wasting his time and that of UA agents posing hypothetical questions about what may befall him in the future. There is nothing to compensate for. Just stop calling and don't waste taxpayer money at DOT.