Depends - not every Android device is the same.
For example, I'm (still) blown away by disk I/O performance on my Nexus 5, which went through 4.4 -> 5.0 -> 5.1 -> 6.0, while the 2012 Nexus 7 turned into frozen molasses once it got the 5.0 "upgrade".
But if you're concerned about the space being used, itself -- yeah, I suppose so. Your best friends are the "messages to sync" / "messages to cache" and "menu -> compact the database".
I know there are other discussions on this forum about those settings, so you may want to use search too.