If your app absolutely must rely on the cloud for every one of its interactions, then fine. If not, you're just applying band-aids to a problem of your own making. Many apps could easily be local only, or local first. If you're not constantly accessing the network for information which could be stored locally, then you don't need to hide your app's slowness behind animations.
Canva replaced PowerPoint. Canva is cloud based and PowerPoint is not. There's so many apps that are cloud only so that corporate it no longer has to manage installations and users don't need to ask IT for permission anymore. I think SaaS doesn't really work without the cloud, you could technically do what adobe does but why bother with app distribution and windows' quirks. Cloud based web apps are write once, run anywhere come true with no installation required. Cloud based is more convenient for the user and the developer, at the cost of app runtime speed