I had 5 monitors for a bit before changing to a 32:9 monitor for my main monitor which gives me the equivalent of 4 monitors.

As long as the monitors are setup right (e.g. leveraging vertical space and not just horizontal space), I find the desktop real estate to be invaluable.

But, I started doing dual monitors over 20 years ago. So, I'm an early evangelist of multi-monitor and have adopted workflows that greatly benefit from it.