I'm a Debian user. I see this a lot. Often in contrast with Ubuntu.
Yet Debian's cycle is roughly on par with Ubuntu's LTS - every ~2 years.[0]
Perhaps they mean there are interim releases in Ubuntu? It's hard to say for sure, as the phrase 'outdated software' can mean different things (more than 6 months old, more than 2 years old, in need of a security patch for > 1 week, etc).
> But for a regular desktop/workstation system I want more frequent software updates even if it comes at the cost of a little stability.
This sounds like you want Debian Testing (currently Trixie).
Much more frequent software updates, with an extremely small risk of less 'stability'.