Now the following might be nonsense to you, but I hope, like Arneh's excellent work does, to help attract more peoiple to EECH, and this means as a result, also attract more modders to EECH.
I see this as a milestone. A compliment for the game, to have matured so much to attract payware.
I have been in contact with Arneh before and about this release and we talked about a lot of things, and I would like to keep that private. But as far as I can see we have a good developer relation. Only Arneh can judge about morally wrong or not imo.
Respect. I think it's a professional approach [to ask the creator first for permission].
Though. It seems a bit out of balance. To have Arneh's tons of add-ons for free and pay for a relative small add on like textures.
I thank you for your add-on and I have no problem this game is attracting payware developers. It's a new phenomenon for me.