There are many criticism I could level at MacOS and the idiosyncratic manner in which various tasks are done on that platform, but installing and uninstalling applications is not one of them. Drag and drop to the Applications folder (to install) and to the bin (to uninstall) is about the easiest method on any platform.
On Linux, updates are handled by the package manager, which is much nicer.
This only applies if you are using distribution/PPA-sourced (i.e., effectively third-party packaged) versions of LO. If you download the website version (which is a method more comparable to how installation is done on MacOS) the process is slightly more involved i.e., for my flavours of GNU/Linux it involves uninstalling the old version (via package manager), unzipping the downloaded DEB, changing to the directory, and issuing sudo dpkg -i *.deb
. Still not very complex though IMO.