Seal clubbing, players hanging around in starter systems looking for new players to simply kill on sight, often these players use big ships that is engineered and prey an new players, that for obvious reasons are in small un-engineered ships, hardly any challenge at all, hence the name seal clubbing... These also falls in the category of Gankers, but this is now broader and but the principle is the same, only picks fights where they have the advantage and if the target turns out to be to much, they run to avoid destruction.
So what is it that is so hard to grasp here...
Once everyt week or what arbitrally limit you will suggest, you can change your name.... an action done by you... This will make it WAY easier to troll other players by using look-a-like names.
Now compare this with creating a support ticket, where you now have to motive WHY you want a name change! And support can now do a simple check for look-a-like names, as your suggested name might look a bit strange. Also, support will keep a record of your reasons, and might in the end flat out refuse to change your name, due to many such requests...
I very much doubt that the CMDR name is used as a key, as that is a bad practice for database design, as we have names can contain spaces and other characters, and is variable length. Not a good value to use as a reference. And I seriously doubt that First Discovered by is a table that contains all the player names,as that increases the size of that table, compared to using a fixed sized numerical ID and then use a lookup table for the CMDR name. But this is beside the point and has really nothing todo with a name change., it is just diversion tactic from the issues your suggestion have.
And lastly, your logic is flawed, you make a suggestion, that has some huge holes in it, those are pointed out to you, and your solutions to these issues can be summed up in tour "Saying it doesn't stop abuse, doesn't mean it is abusable.". So who is the burden of proof on here? the one who suggests new options or the ones telling about the problems this suggestions open up?