You mean roulettes are the most braindead source to get them (unless you actually get placed in DT content). If you compare the one time daily bonus for each roulette against direct queueing for level 100 content and the time spent on each, you'll come out roughly even or even way behind doing roulettes (unless you're stuck with a party that keeps wiping on His Royal Headness).
Players aren't doing the roulettes as a better source of tomestones. Hunt trains outstrip every other form of content when it comes to tomestones for time spent. They're doing the roulettes because they don't have to pay much attention to what they're doing.
It helps to remember that this game is mostly designed around story mode. When you're running Praetorium for the 123rd time, that's not you going back in as level 100 WoL. After all, the Praetorium is just one big huge crater in the ground by that point.
That's you remembering via your echo what it was like doing Praetorium that first time, when you were only 50 and had a more limited range of skills available. If you find it annoying to be level 50 again instead of level 100, then you should be doing level 100 content as others suggest.
At least the revamp for Praetorium demonstrated the value of using a more appropriate ilvl sync for content. I wish SE would apply it toward all 50-60-70-80-90 content instead of just the X.0 MSQ duties. It would at least make Crystal Tower more interesting even if it wouldn't stop the complaints about always getting it.
Those early duties weren't designed around all classes having AoEs and trash HP is so low it still dies quickly even with single target.