I am going to assume that by “devs” you mean Tofugu and by extension the whole WaniKani team as this is not solely a development / engineering decision.
I can’t give you an answer to this sorry as this post is not the right forum for this and I run the risk of derailing the main focus of this announcement if we got into it. I see you have moved the conversation of to here: Petition to make popular third party add-ons an integrated feature so thanks for that.