Update: Nicalis responds.

Update (Tue 24th Sep, 2019 00:40 BST): Nicalis has now provided a statement to US Gamer, addressing the delisting of Ittle Dew 2+ on consoles:

Our Ittle Dew 2 publishing agreement with Ludosity has ended. We’ve been in communication with the Ludosity team and the first-party platforms during the transition and attempted to transfer the publishing from Nicalis to Ludosity. The game was successfully transferred to Ludosity on Steam. Unfortunately, not all storefronts have a backend system in place to transfer or “re-home” a game to a different publisher. To abide by the terms of the original contract and Ludosity’s request to assume control of publishing Ittle Dew 2, it was necessary to delist the game on these platforms.

Read the full article on nintendolife.com

Original source: http://www.nintendolife.com/news/2019/09/ittle_dew_2_removed_from_switch_eshop_against_developers_wishes