Honestly I wish the Rams did this as well. Do they need to follow through on the threat? Not necessarily. A "threat" might be enough to make some fans think twice about selling their tix purely for profit.
I am sick of Rams season ticket holders CONSISTENTLY putting up their tickets for resale profit. Rams have more than enough fans to pack SoFi with blue and yellow. The problem is all the supposed fans who are mainly looking to make a buck.
A season-ticket holder should keep a commitment to attend at least a majority of the games. The Rams should sell season tix to true fans!
Here's an article about the Seahawks "blunt" warning to Seattle re-sellers:
Seahawks Issue Blunt Playoff Ticket Resale Warning to Season-Ticket Holders
The Seahawks are cracking down on scalpers, but true fans need not worry.