Threads surpassed X in DAU only for mobile, with a slow decline shown in X (see plot), with "dying" being a misleading word. For web, X has 18x more DAU than threads [1].
Total daily active users (all access methods) is overwhelmingly for X. I can't find the trend for web. Please post the link you found.
Threads apparently overtook X for DAUs last year according to SimilarWeb.