For a context, some older version of swebok was edited by Steve McConnell, the author of an old best seller "Code Complete" At that time, there was some consens

For a context, some older version of swebok was edited by Steve McConnell, the author of an old best seller "Code Complete" At that time, there was some consensus on what's software engineering. This version (coming out at 2013) was extension of that line of thought. The IT field has expaneded since then. So your point is kinda right: I don't think SWEBOK covers mobile or ML fields well, for example. But there is a still some value to cover traditinal software engineering field, as it still exists and it's not that small.