Usually, i am not up to get into "Why Raiders do need higher Ilevel Stuff" but to be honest, they deserve it. I am a non-raider since this Kind of Raids (Coil/Alex) doesnt apeal to me since it doesnt feel like a raid to me, just more like Primals. There is a reason why People raiding, some are just motivated to clear it and doesnt care about Gear and others (which is basicly the minority) do it for Looks and Ilevel to be ahead of everyoneelse who cannot Raid due RL issues or dont want to.
For me, SEs design is really bad because Tome Gear should be needed to get into Savage and not be the equivalent to the Raiders Gear. The numbers of Raiders in this Game (in my opinion) isnt that low because ist "too hard", its just low because it doesnt worth it.
SE added back to release of Alex a Normal Mode to let casual Players experience the Story and also gave them Gear as reward. Without the Gear Progression behind it, People would just do it once and would never touch it again.
Same goes for Savage, if it doesnt reward you in your desire, its not worth doin it, thats the Point.
People should stop asking to be carried from this Game, if you dont Raid, then the highest possible Ilevel isnt for you.
ps.: The reasson why Raiders "need" the highest Ilevel is because new Content get released over and over and should be allowed to get right into the next Raid Content and not farming Tomes again.