Why anyone looks for a DaVinci Resolve alternative in the first place
People rarely leave Resolve because it lacks something. They leave because it is a post suite: it wants a machine, a project, a media pool and an hour. That is a completely reasonable price for a documentary and a completely unreasonable one for a ninety-second clip you want up before lunch.
Montaj takes the opposite bet. No project setup, no media management, no render page. The clip is already on the device, the AI runs there, and the export comes out checked. Duration, dimensions, audio and decoded frames verified before it is declared done.