> If anything they do background processes better since you can send a very long task off to a server and shut off your computer, come back later and pick up where you left off.

I think it's fair to say that's a benefit of web apps over native apps in many cases. But for the kind of business app use case they're talking about, it's also a tradeoff. I can imagine a lot of business apps where you don't want to send the data to the server of a Replit etc. and doing all the processing local is a benefit.