Snipe this, the right to translate that, the morals of immoral behavior, trolls, do you want them to stop giving us free things?
Guess what if the author did make it free as some are saying then it can, to a minor extent pending further research, be considered as open source and is open for all to use for expression.
If Meraki is worried about having a place to post chapters where no one can "snipe" by posting chapters of the same work maybe they should create their own site to post their work on instead of a shared site... Oh wait... they already did that. It just so happens they advertise the chapter on Mangadex before releasing it.
This chat is full of platforms arguing their side and not listening to the reasoning the others have. One group sees that it is right for all sides to have equal access and "rights" another group only sees their entitlement to free entertainment and the desire to protect it and more seem to strongly feel their imagined ownership is real because they are passionate and put work into sharing art they contributed to. Just because what you are feeling makes sense for the situation/thoughts you are having does not mean that you are right. That is not how the world works. Unless the real owner of the work gave Meraki the exclusive rights there is nothing wrong with anyone else posting it. If the title on MangaDex were "Meraki's interpretation/scanlation of A Returner's Magic Should Be Special" it would be different, (separate runs of the same manga have been done by groups to emphasize different perspectives) but that is not the case here. You can try to create rules, unless you have the authority to enforce them no one will obey them. Or you can try lashing out and trolling to shame people into complying to your world views, however I thought as a society we have spent decades trying to argue that is not an appropriate way to treat humans. The toxicity of a community will do more damage than someone posting a chapter showing their own interpretations, which they can post however they want regardless of how you feel they should be allowed to express themselves. Quit pretending you viewers have the right to decide who has access to these works of art. Stop pretending moral high grounds to force segregation of resources.