Not only are the upgrades free, the full license is still only $295 and can be freely migrated between macOS, Linux, and Windows (unless something has changed, serial numbers can be activated on two systems at a time and transferred freely so long as you have Internet access).

I'm no expert, but I never found Resolve materially more difficult to learn or use than Final Cut Pro or Premiere. And if you're doing anything moderately complex, it's potentially easier to learn because things that require external tools in FCPX and Premiere are built in to Resolve Studio.

I suspect the agent integration is primarily workflow/UI related, but regardless, I don't see it as any more anti-creative than incorporating precanned effects and presets into a project, and potentially a very useful learning tool since the Resolve UI is quite good at letting you see how the sausage is made.

$295 one time permanent license with free upgrades and can be migrated between different computers?

I don't have a single reason to do any form of video editing, let alone professional video editing, but that kind of pricing model makes me want to buy a license just to make sure that companies like this stick around.