Suit yourself but you seem to have overlooked
Odrapnew's post that this recall is about the connected ball joint not the arm itself, which Steeda does not offer, and that you may not have access to, to DIY, for quite a while if all current production of the redesigned part is being sent to dealers for the recall work. There may be other 3rd party suppliers of this BJ, but it is not so clear to me that the quality would be any better and in some cases, worse as this is not the type of BJ where off-road enthusiasts are getting oversized parts like for their front control arms (on other vehicles) is it?
Besides you are overlooking something else. It is no more work or expense on your part to have the recall done and come back later to DIY, "supposed" upgrade it (if anyone else had the new/improved part yet), and have the new recall-replaced part you took off, available to use later if your aftermarket part ends up failing later... even if it is 20 years later, instead of having an old part taken off after 6+ years of wear.
Only issue I see is how long the vehicle is laid up at the shop waiting for them to get to it, except that most of us probably aren't in dire need of this replaced at all, just those driving in highly corrosive environments.