No real reason why they should. They don`t get going until quite some distance from the end of the barrel.
Oh, BTW, please be careful shooting those too. No one likes a fire to put out several hundred yards away from the shooting bench.
Shooting tracers is perfectly safe in any 50cal rifle.
Firing tracers from an unlined barrel is an old wives/Internet tale. Ignore it.
Load 'em up and have fun. At long range they are fun to show people the ballistic arc of the .50 and the effects of wind at long range.
I use the few tracers I have left just for that reason.