There is no such argument among people who actually know how this stuff works. Cheap drones might work pretty well for trench warfare in Ukraine but it's impossible to build a cheap drone that would be effective in a conflict with China over Taiwan. The distances alone mean that aircraft must be large just to get there, and thus not cheap regardless of whether there's a crew onboard.

Autonomous flight control software is still only able to handle the simplest missions. Maybe that will change in a few years but for now anything complex requires a remote pilot, and those communication links are very vulnerable.

There really is not, this argument was a total discredit of Elon Musks opinions on anything military. Case in point, Iran has been a major user of these drones yet they’ve been out of the game against an enemy with a real air force

That's really just X/Twitter conjecture. We don't see this argument substantiated in any modern air combat anywhere in the world.