It isn't though, because it becomes harder for socialists to organize socialist-adjacent libs when said libs are convinced that "Well if I just vote THIS ONE MORE TIME things will get better." The lie the Democrats are selling is that they're actually a real opposition to the right, but it's a lie. They're using that lie specifically to draw people away from the promise of real change through meaningful action, and they reason they're doing that is to protect the interests of capital. Ask anyone who organizes how much easier the actual organizing part is when a Republican is in power; it's way easier because folks can't hide behind that "well maybe if we just try harder we can get the Democrats to care about us." Nobody feels that way when Democrats have no power so they actually engage with organizers. Logistically it might be harder, legally it might be harder, it might be more dangerous...but the actual human to human conversations are much easier when libs aren't under the influence of that "Just one more vote" lie, and that human connection is the thing that builds the kind of power necessary for the changes we need.
We gotta stop pretending like anything is easier or better under Democrats. They're good at making us feel like they are ignoring us or giving us space, but they aren't. They're actively hampering real action and real organizing.