When James Gunn and Peter Safran took charge of the DCU, fans were tentative over what films would end up making the cut. Warner Bros., after all, scrapped Batgirl in favor of tax write-offs, leaving some curious if Blue Beetle would follow suit. Luckily, it's been kept on the docket, alongside the likes of The Flash and the Aquaman sequel.
Source:https://www.cbr.com/blue-beetle-post-credits-scene/