The Arrowverse came to its climactic conclusion, with James Gunn's plan for the DCU becoming the focal point for DC Comics and Warner Bros. Discovery for the foreseeable future. It was a shame to see such a much-loved area in the DC Multiverse get brought to a close, but the Arrowverse has had its time. It created a lot of memories, adapted characters to the screen that audiences had never seen before, and acted as a testing ground for future cinematic releases.
Source:https://www.cbr.com/arrowverse-project-inspire-dcu/