MacOS Catalina: Slow by Design?

I would give anything to have my Mac be fast again. I have no idea what changed but even 10.14 feels a whole lot slower than it was earlier. Haven't upgraded to 10.15 seeing all the negative reviews it is getting when it comes to perf. Apple needs to seriously give perf a priority for Mac. Do they really expect developers to use a Mac to develop Apps when it is slow as molasses? I shudder to think what will happen to the Apple ecosystem if developers migrate to another OS for development. Apple will come crashing down. I don't wish for that to happen but looks like there is absolutely no one at Apple focused on making it better.

Remember, people don’t write blog posts saying nothing changes. The negative reviews tend to be one of two things: spotlight reindexing shortly afterwards, or attribution error where every new thing is blamed on the OS upgrade and similar old behavior is mentally discounted. App development didn’t suddenly get “slow as molasses” and for most users the install was a reboot and back to work.