Boosts and carried have existed in this game since it launched. I remember specifically selling UBRS clears for people to aquire their Ony attunements for ingame gold. I remember selling access to dungeons that required a key for 50g. I even remember myself as a warrior, selling clears of strath/scholo/lbrs/dm all wings (including tribute runs)/mara (NR gear farming) - with 2 of my friends (priest and a mage).
Did it negatively impact anyone else who earnt their ony neck without paying for help? No.