In all fairness, it should be pointed out that Southwire has only requested the proper use of their trademarks. I have seen nothing more than that, no threats to sue....anything.
Also, the real Romex? is good stuff.
I think that the convention has been set that when we say 'romex', (small r) we mean NMS. If we say 'real Romex', (capital R), we mean Southwire's product. Having to distinguish between 'romex' and (real) Romex? sets the real thing apart from the generic and implies superiority on the real thing's part.
Southwire's asking to further distinguish the real thing from the generic is sensible. They even said 'please'.
FWIW, the alt trick don't work on this computer. I had to cut and paste the 'r thingy'.
Maybe Southwire should follow Coca-Cola(r)'s lead and advertise Romex(r) as 'REAL Romex(r)' Accept No Substitute'.