Despite websites giving benefits to users who use referral links for services they would already be using, for whatever reason Steemcleaners automatically deems this as spam. It is unfair, make sure to flag the comments they make if it is appropriate, but take another step and flag if you see it's misuse on other users too, here is a prime example: https://steemit.com/trialbycomics/@isteemithard/worldspine-wurm-magic-the-gathering-drawing-challenge-by-kommienezuspadt-art-by-isteemithard-final-entry