I'm no SP expert either, but have come across forums and such that indicate SP and Access are not the marriage made in Heaven as was once touted. Kind of like ADO was going to replace DAO (development of ADO has ceased) and replication was the cat's meow (or some other part). Now you can't even open a replicated db using 2016. Would not surprise me if integrating SP with Access falls by the wayside as well. If it were me, I'd be looking for anything I could dig up about SP and Access. Remember, you will find info that says it's the next best thing - just like those who say multi-value fields and storing objects in db's is great. If you don't win the argument, just make your opinions known by email while professing to support the decision. Then politely push any fallout uphill where it will belong.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.