Yes - many AUR helpers has capabilities of doing general system maintenance - but it is best to avoid such use.
Using an AUR helper for general system maintenance may introduce hard to solve issues.
Remember that AUR and custom build scripts are unsupported on Manjaro.
Best practise is to use the correct tool for the task
- use
pacmanfor system updates - thus avoiding problems with custom packages
Always do a full system update - before rebuilding custom packages.
- use
yayfor custom build scripts - this is the primary use case foryay
More reading [Need-To-Know] About Manjaro and AUR